Short-spined sea urchin fossils were found directly above long-spined sea urchin fossils in a layer of rock. What do the differences between the two sets of sea urchin fossils suggest about them?

The longer spines developed as the shorter-spined sea urchins grew older.
The longer-spined sea urchins existed before the shorter-spined sea urchins.
The shorter-spined sea urchins stretched their spines to ward off predators.
The shorter spines did not protect the sea urchins well enough and they died off.

Answers

Answer 1

Answer:

The longer-spined sea urchins existed before the shorter-spined sea urchins

Explanation:

The lower buried is what died off first and the recently buried is the newly evolved version.

Answer 2

Answer: it shall be opion b

Explanation:


Related Questions

50 points! pls help!

Answers

Answer:

1. Latitude. Kuala Lumpur is located in the equatorial zone, near the equator, so it receives a lot of sun for the  entire year, and this explains its warm climate.

2. The main reason for this difference is the altitude: while Minsk is located at 280 meters over the sea level, Banff is located at approximately 1400 meters over the sea level. As the altitude is higher, the average temperature is lower.

3. Jakarta: in fact, it is located at a similar altitude of Kuala Lumpur (just in the opposite hemisphere), in the equatorial zone, while Baltimore is located much more north, so in a colder region.

4. Because they are located at approximately same latitude (just in the opposite hemisphere), so they are more or less same distance from the equator, and they receive more or less same amount of sun light, therefore they have similar climate.

1. it is Latitude. Kuala Lampur is located in the equatorial zone, (near the equator,) so it receives a lot of sun for the  entire year, and this explains its warm climate.

2. The main reason for this difference is the altitude: while Minsk is located at 280 meters over the sea level, Banff is located at approximately 1400 meters over the sea level. As the altitude is higher, the average temperature is lower.

3. which is closer to Jakarta  :   it is located at a similar altitude of Kuala Lampur (just in the opposite hemisphere),also  in the equatorial zone, while Baltimore is actually  located much more north, so its in a colder region.

4. Because they are located at approximately the same latitude (except just in the opposite hemisphere), so they are around the  same distance from the equator, and they receive around the  same amount of sun light, therefore they have pretty similar climate.

A

Part D

Explain why your model improves upon the student's original model. How would your model help someone who was

learning about photosynthesis for the first time?

B

I U

x

X

Font Sizes

A- A.

Answers

Answer:

See below

Explanation:

This new model perhaps better explains the elements required in order for photosynthesis to take place. Sunlight, water, carbon dioxide are essential for the plant so it can produce it own food. Someone who is not previously familiar with the process of photosynthesis needs to start from these basics and then further build on this knowledge.

Answer:

This model shows all the major molecules involved in the Calvin cycle and how they change at each stage of the process. This added detail would clarify that the Calvin cycle is a series of complex steps. The student’s original model didn’t show this breakdown at all, and it shows only the final products. This model also shows the number of each molecule created, which the original model doesn’t do.

Explanation:

PLATO Edmentum

What is one of the reasons why Gregor Mendel chose to study pea plants? They exhibit only a single trait. They produce flowers. They grow very slowly. They reproduce sexually.

Answers

Answer:

They reproduce sexually.

Explanation:

They exhibit multiple traits and grow quickly.

One of the reasons why Gregor Mendel chose to study pea plants is because they reproduce se-x-ually

Gregor Mendel's study of pea plant

In Gregor Mendel's work on pea plants, he discovered the fundamental laws of inheritance. He deduced that genes come in pairs and are inherited as distinct units, one from each parent. Parental genes are randomly separated to the reproductive cells so that s-ex cells contain only one gene of the pair

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6. A relationship between 2 species, 1 species benefits and the host is harmed.
a. symbiosis
b. mutualism
commensalism
d parasitism

Answers

Answer:

symbiosis

Explanation:

Symbiosis is a close relationship between two species in which at least one species benefits.Parasitism is an example of symbiotic relationship in which one species (the parasite) benefits while the other species (the host) is harmed.

Answer:

your answer is d) paratism

Explanation:

How would Earth most likely change if the amount of greenhouse gasses continued to increase?
A Glacier size would increase.
B Air pollution would decrease.
C Global temperatures would increase.
D) Ocean levels would decrease.

Answers

Answer:

C. Global temperatures would increase

Explanation:

greenhouse gases affect temperature, so, it would be C.

Have a great day

answer : c
explanation cause i know it’s c

*PLEASE ANSWER TY* Which gas makes up the majority of air pollutants? a.) sulfuric acid b.) sodium hydroxide c.) carbon monoxide

Answers

Answer:

carbon monoxide

Explanation:

sulfuric acid is litterally acid

sodium hydroxide..... common now

Carbon monoxide (c.) is the gas that makes up the majority of air pollutants.

What is carbon mono oxide?

Carbon monoxide (CO) is a colorless, odorless, and tasteless gas that is produced by the incomplete combustion of carbon-containing fuels, such as gasoline, natural gas, coal, and wood. It is a highly toxic gas and can be harmful to both humans and animals.

When inhaled, carbon monoxide enters the bloodstream and binds to hemoglobin, the molecule responsible for carrying oxygen to body tissues. This binding affinity is much stronger than that of oxygen, resulting in reduced oxygen delivery to organs and tissues. As a result, exposure to high levels of carbon monoxide can lead to symptoms such as headache, dizziness, nausea, confusion, and in severe cases, loss of consciousness and death.

Carbon monoxide is a significant air pollutant, often found in areas with heavy traffic, industrial emissions, and improper ventilation. It is important to have proper ventilation systems and to use carbon monoxide detectors to minimize the risk of exposure to this dangerous gas.

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______,______and ____ are separate continuums on which people can be ranked from high yo low; individuals may be high in one dimension and low in another

Answers

Answer:

Wealth, power and prestige

Explanation:

The difference in people could be ranked based on which level they have lied i,e totally depended upon the wealth, prestige and power

There are mainly three levels i.e

1. High level: It includes entrepreneurs in the wealth column. The power at a high level could accomplish its own goals irrespective of their oppositions.

The prestige at high level represents the social status, reputation, etc

2. Middle level: it includes skilled and semi-skilled labor class

3. Lower level: It consists of unskilled labor. In this power could be in terms of lacking authority, etc and contains low social status in the prestige column

which of the following segments of the growth curve would starvation proteins be at their highest detectable levels?​

Answers

No drawing ? If you can send it i might can solve it!
Attach a picture and I will help you!

A biologist is in the process of classifying a newly discovered fungus. The fungus is a decomposer and has saclike
structures. The organism most likely belongs in the same group as which of the following?

Answers

Answer:

A biologist is in the process of classifying a newly discovered fungus. The fungus is a decomposer and has saclike structures. To which group does the organism most likely belong? fungi that makes blue cheese ... These statements compare and contrast Ascomycota and Basidiomycota

The fungus is a decomposer and has saclike structures. To which group does the organism most likely belong? ... D.fungi that are autotrophic decomposers. See answers (2). Ask for details; Follow; Report ... a survival advantage because it reduces competition over resources between individual fish of the same species.

hope this helps

Answer:

Explanation:This topic gives an overview of;  

Classification of Living Organisms

Basis of Classification

Classification and Evolution

Hierarchy of Classification Groups

Monera

Protista

Plantae

Animalia

Classification of Living Organisms

Each organism is different from all others to a lesser or greater extent. Obviously, we and our friends have a lot in common when we compare ourselves with a monkey. But suppose we were to add a cow to the comparison? We would then think that the monkey has a lot more in common with us than with the cow.

Think of all the different forms in which life occurs on earth. On one hand we have microscopic bacteria of a few micrometre in size. While on the other hand we have blue whale and red wood trees of california of approximate sizes of 30 metres and 100 metres repectively. Some pine trees live for thousands of years while insects like mosquitoes die within a few days. Life also ranges from colourless or even transparent worms to brightly coloured birds and flowers.

This bewildering variety of life around us has evolved on the earth over millions of years. However, we do not have more than a tiny fraction of this time to try and understand all these living organisms, so we cannot look at them one by one. Instead, we look for similarities among the organisms, which will allow us to put them into different

classes and then study different classes or groups as a whole.

In order to make relevant groups to study the variety of life forms, we need to decide which characteristics decide more

fundamental differences among organisms. This would create the main broad groups of organisms. Within these groups, smaller subgroups will be decided by less important characteristics.

When members of a population come into an area, it is called
A demography
Bimmigration
C populations growth
Demigration

Answers

The answer is D I hope it helped out! :)
Answer:
(D) Emigration
Explanation:
When a person or a traveler moves from his hometown or any other location to a new location it is said that he is an emigrant...

Hope it helps you‍♂️

I WILL GIVE BRAINLIEST AND THANKS




Different ways of transforming energy have different environmental effects. Which of the following is a waste problem of nuclear power that does not occur with coal-burning power plants? A. acid rain gases being produced B. radioactive wastes that can last thousands of years C. carcinogenic fumes that must be discarded D. water contamination caused by harmful by-products

Answers

Answer:

B. Radioactive wastes that can last thousands of years

Explanation:

Nuclear power can create radioactive wastes that last thousands of years.

The answer is B because radioactive watses that can last thousands of years is a waste problem that does not occur with coal-burning power plants

fill in the blank. to form a multi cellular organism, a zygote must divide many times in a process called _____. Adult stem cells are considered _________, as they can differentiate into several different cell types in the tissue where they are located.

Answers

Answer:

1. cell proliferation

2. multipotent

Explanation:

In which process does RNA polymerase help synthesize mRNA from a DNA template? transcription translation translocation transportation

Answers

Answer: Transcription

Explanation:

RNA polymerase is an enzyme that plays a key role in the process of transcription, which is the synthesis of mRNA (messenger RNA) from a DNA template. Therefore, option (A) is correct.

What is transcription?

Transcription is the process by which the information contained in DNA is used to synthesize RNA molecules. It is the first step in the process of gene expression, in which the genetic information stored in DNA is used to produce the proteins and other molecules that carry out the functions of the cell.

During transcription, an enzyme called RNA polymerase reads the DNA sequence and synthesizes a complementary RNA molecule, called mRNA, which carries the information from the DNA out of the nucleus and into the cytoplasm, where it can be used to guide the synthesis of a protein.

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plzz answer for brainliest

Answers

Answer:

It would be the bottom right graph.

Explanation:

I know this because the question was looking for a graph of the object being initially at rest. Meaning, it would first have a speed of 0 seconds. None of the other graphs portray that except the bottom right one. Mark brainliest please.

bottom right graph!!!!

HELP!!!!! pls I’m getting mixed answers of B and C!

Answers

Answer:its option A cuz they are asking on what is the negative effect of rising ocean temps

Explanation:

Answer:

A. the drying out of fertile land and the formation of dust bowls

Explanation:

When the ocean temperature rises, the fertile lands get warmer and get dried out. Dust bowls are caused when a land is dry or the weather is dry.

Describe wavelength, amplitude, and frequency in relationship to vision and hearing

Answers

Explanation:

Visual and auditory stimuli both occur in the form of waves. Although the two stimuli are very different in terms of composition, wave forms share similar characteristics that are especially important to our visual and auditory perceptions. Waveforms of different types surround us at all times, however we only have receptors which are sensitive to specific types of wavelengths. In this section, we describe the physical properties of the waves as well as the perceptual experiences associated with them.

AMPLITUDE AND WAVELENGTH

Two physical characteristics of a wave are amplitude and wavelength (figure below). The amplitude of a wave is the height of a wave as measured from the highest point on the wave (peak or crest) to the lowest point on the wave (trough). Wavelength refers to the length of a wave from one peak to the next.

 

The amplitude or height of a wave is measured from the peak to the trough. The wavelength is measured from peak to peak.

 

   Wavelength is directly related to the frequency of a given wave form. Frequency refers to the number of waves that pass a given point in a given time period and is often expressed in terms of hertz (Hz), or cycles per second. Longer wavelengths will have lower frequencies, and shorter wavelengths will have higher frequencies 

Wavelength and frequency are inversely related so that longer waves have lower frequencies, and shorter waves have higher frequencies. In the visual system, a light wave's wavelength is generally associated with color, and its amplitude is associated with brightness.

Some individuals have a condition in which their bodies are unable to properly produce the protein myosin. What is one likely effect of this condition? muscular weakness hardened ligaments decreased nutrient absorption build up of urine in the kidneys

Answers

Answer:

Chronic Kidney Disease - Learn about the causes, symptoms, diagnosis ... Chronic kidney disease is a slowly progressive (months to years) decline in the kidneys' ability ... the kidneys cannot absorb water from the urine to reduce the volume of urine ... in the blood can damage nerve cells in the brain, trunk, arms, and legs

Answer:

weakness, affected individuals may start walking later than usual and have a waddling gait, trouble climbing stairs, and difficulty lifting the arms above shoulder level.

Explanation:

The signs and symptoms of myosin storage myopathy usually become noticeable in childhood, although they can occur later. Because of muscle weakness, affected individuals may start walking later than usual and have a waddling gait, trouble climbing stairs, and difficulty lifting the arms above shoulder level.

In order for a dead organisms remains to become fossilized certain conditions must be met. summarize three of these conditions.

Answers

The organism generally must have hard parts such as shell, bone, teeth, or wood tissue; the remains must escape destruction after death; and the remains must be buried rapidly to stop decomposition. This does make the fossil record biased because animals with soft bodies are less likely to form fossils. It also means that particular environments will not help fossils form because the remains must be buried rapidly and escape the detection of scavengers.
4. Describe three different methods of fossilization.
Organisms can be buried and preserved in substances such as frozen soil, volcanic ash, sediment, ice, oil, and amber. This process preserves even the soft parts. Hard parts such as shells, teeth, bones, and wood can also be more easily preserved because they resist weathering. Hard parts can also become altered due to carbonization (leaves only a thin film of carbonaceous material), petrifaction (gets replaced by minerals in water turning it to stone), and replacement (hard parts dissolve and get replaced by calcite, silica, dolomite, and iron compounds)

The vast majority of deceased organisms vanish without a trace, so fossilization is a rare process.

What are the conditions that favor fossilization:

Hardbody parts (bones, teeth, shells) will fossilize; soft body parts will not but may leave traces (e.g. imprints)

Remains preserved (protection against scavenging, erosion, and environmental damage)

There is a lot of pressure to get the remains mineralized (i.e. turn hard body parts into fossilized rocks)

Anoxic (low oxygen) conditions are used to protect against oxygen damage and to prevent saprotroph decomposition.

Thus, we can conclude that hardbody parts remain preserved, and high pressure and anoxic conditions are required during fossilized.

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*PLEASE ANSWER* How can someone live smarter to reduce his/her carbon footprint? a.) live in a smart community b.) buy inefficient appliances c.) use incandescent bulbs

Answers

Answer:

a.) live in a smart community

Explanation:

A standard incandescent light burns through 50 watts of electricity per hour. Replacing an incandescent bulb with an LED bulb can save 6 tons of household emissions per year. Saving 6 tons of carbon emissions is the same as reducing your gas consumption by 700 gallons. (proving b wrong)

you can help reduce your carbon footprint and other greenhouse gases by using energy-efficient home appliances since they have lower emissions of harmful gases into the environment. (proving c wrong)

the answer is a. love in a smart community, by doing this they will use appliances that don’t affect the environment as badly as others

Project: Analyzing Genetic Variation WRITE YOUR FOUR PARAGRAPH RESEARCH PAPER in the space provided below. Restate your claim. Describe the first evidence that supports your claim—in a paragraph and using your own words. Describe the second evidence that supports your claim—in a paragraph and using your own words. Provide a summary paragraph that restates your claim, and explains how your research defends your claim (a conclusion).

Answers

Answer:

1st

Explanation:

Answers first you’re welcome

are mutations good or bad

Answers

Answer: Mutations can be good or bad.  

Explanation:

Both. Mutations can be good because it can help the species evolve to make survival easier. But they can also be bad because they can cause the opposite to happen.

. An experiment studies the effects of an experimental drug on the number of offspring a mother mouse has. 10 female mice are given the drug and then impregnated. The number of mice in their litters is compared to the litters of mice that did not take the drug. Based on the data, what would you conclude about the drug, explain if it worked or not and give your reasoning.?

Answers

Answer:

I don't know the data but you can infer the drug/nondrugged mice had a bigger/smaller litter based on the numbers from the data

Explanation: you would have to include the data so we can give you the answer.

If it worked it be no mice

Microorganisms of a family of fungi, called the Lepiotaceae, live with leaf-cutter ants. The ants collect fresh leaves to grow the
fungus, and then they feed the fungus to their larvae. Another type of microorganism, a fungus of the Ophiocordyceps family, also
has a relationship with a type of ant. The spores of the fungus attaches to carpenter ants in order to complete its life cycle. The
spores spread into the ant's body and causes behavioral changes in the ant, eventually causing the ant's death.
What does this information demonstrate?

Answers

Answer:

Between the Lepiotaceael and the eaf-cutter ants, there is what we call mutualism. They both depend on each other buh no harm is done.

But between Ophiocordyceps family and the carpenter ants, it is called parasitic relationship. The Ophiocordyceps harms the carpenter ants.

Explanation:

Hope it helps.

keep up the good work kid

Carbohydrates are made of which monomers

Answers

Answer: Describe the monosaccharides. Monosaccharides are the monomers of carbohydrates and are often referred to as “the simple sugars”.

Explanation: You can often recognize a carbohydrate by its suffix – ose (e.g. glucose, sucrose, cellulose, etc.)

Carbohydrates are made of elements Carbon , hydrogen and oxygen! Carbohydrates occur as sugars and polymers. The simplest form which is monosaccharides and disaccharides are sugars and polysaccharides are polymers ! Disaccharides are made of two monosaccharides formed my a glycocidic bond ! For example maltose is made of 2 glucose molecules and sucrose is made of glucose and fructose and lactose is made of glucose and galactose! Monosaccharides bind as a long chain structures or branches and forms a polysaccharide! Usually 100 to 1000 monosaccharides are included ! For example cellulose is made of glucose as it’s monomer and inulin which is present in dalia tubers are made of fructose ! We can obtain monosaccharides by hydrolysis of disaccharides and polysaccharides

Hope this will be useful

which is an involuntary muscle: abdominal muscle or intestinal muscle??

Answers

The intestinal muscle is involuntary. It is smooth muscle

The abdominal muscle is skeletal muscle and is voluntary.

Happy to help!

Answer:

intestinal muscle is the answer

hope it helps

Evaluate whether or not fish farming would have a negative impact on human health

Answers

Fish farming can cause fish diseases cause how close all the fish are it could affect local environment by reducing local fish population the chemicals used as antibiotics to treat fish can leach into surrounding soil and waters and this can poison agricultural land Good things- food supply source of income sea food is loaded with proteins so if fish farms are in poor places it could be really helpful with fighting hunger

Answer:

Fish can’t be super close together or they will break out in disease and when you give some sort of antibiotics in there it spreads into the soil.

The diagram below shows the first four steps of meiosis. What is happening
in the step labeled A?
Meiosis I
88
B
С
O A. Spindle fibers are moving the chromosomes to the center of the
cell.
O B. Mitotic spindles and spindle fibers are forming
O C. Spindle fibers are pulling the tetrads apart.
O D. The chromosomes are copied and form tetrads.

Answers

Answer:

B. Mitotic spindles and spindle fibers are forming

Explanation:

all organism are created of cell?

Answers

hiiiibv ratr bnmgbjmm

Explanation

Answer:

yes

Explanation:

Why is it that duck-billed platypus is classified as a mammal ​

Answers

Answer:

The platypus is classed as a mammal because it has fur and feeds its young with milk. It flaps a beaver-like tail. But it also has bird and reptile features — a duck-like bill and webbed feet, and lives mostly underwater. Males have venom-filled spurs on their heels.

The answer above is better but also because it doesn’t lay eggs hope this helps too

PLEASE HELP!! IS A SEMESTER TEST!!! GIVING AS MANY POINTS AS I CAN!!


What process is this?

1) alcoholic fermentation
2) glycolysis
3) Krebs cycle
4) ETS reactions
Thank You!

Answers

Answer: OPTION 3, krebs cycle is the answer

Answer: The answer would be Krebs cycle
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On January 1, 2017, Sophie's Sunlounge owned 4 tanning beds valued at $20,000. During 2017, Sophie's bought 3 new beds at a total cost of $10 comma 00010,000. At the end of the year, the market value of all of Sophie's beds was $26 comma 00026,000. Calculate Sophie's gross investment and depreciation during 2017. Sophie's gross investment during 2017 was $nothing. Sophie's depreciation during 2017 was $nothing. Locate the gerund phrase and identify its noun use. You could have understood the speech better by listening critically. Which endocrine glands primarily control reproduction and fertility? Choose two options how many solutions does this linear system hacve y=2/3x+2 6x-4y=-10 what was the affect on the mandate system on former ottoman territory in the Middle East Determine whether the underlined number is a statistic or a parameter. Upper A sample of professors is selected and it is found that Modifying 35 % with underline own a television. Choose the correct statement below. Parameter because the value is a numerical measurement describing a characteristic of a population. Statistic because the value is a numerical measurement describing a characteristic of a population. Parameter because the value is a numerical measurement describing a characteristic of a sample. Statistic because the value is a numerical measurement describing a characteristic of a sample write the sum of twice a number and eleven as an algebraic expression Translate we complain. Do not use the subject pronouns just the reflexive pronoun and conjugation! The Botosan Factory has determined that its budgeted factory overhead budget for the year is $601,880 and budgeted direct labor hours are 367,000. If the actual direct labor hours for the period are 334,000, how much overhead would be allocated to the period Does anyone know this 15) Did you have any problemsto findfindfindingfor finding A "flat tax" on personal income, in which the same tax rate is applied to every dollar of income earned by each taxpayer, is an example of Shelley and David have a sweet tooth. Shelley spent \$2.65 for 15 sour keys and 2 chocolate bars. David bought 3 chocolate bars and 10 sour keys for \$3.35 at the same store. Find the cost of each chocolate bar and each sour key at this store. If you need 8 chocolate bars and 24 sour keys to give to friends coming to your birthday party, how much will they cost you at this store? How does a price war affect customers? Answer the following questions: 1. Define a compound. State three points of evidence to show that sodium chloride is a compound. 2. When Iron powder and Sulphur powder were mixed together and heated strongly, a substance A was formed. When did. Hydrochloric acid was added to substance A, the gas B was evolved. a) What is A and what type of substance is it? b) Name the gas B. State one characteristic property of gas B. c)Is the reaction of Iron and Sulphur powder a chemical change or a physical change. Answer the question according to the class 9th student. Suppose you deposit $ cash into your checking account. By how much will the total money supply increase as a result when the required reserve ratio is 0.0? A four-cylinder four-stroke engine is modelled using the cold air standard Otto cycle (two engine revolutions per cycle). Given the conditions at state 1, total volume (V1) of each cylinder, compression ratio (r), maximum cycle temperature (T3), and engine speed in RPM, determine the efficiency and other values listed below. The specific heats for air are given as Cp 1.0045 kJ/kg-K and Cv-0.7175 kJ/kg-K. --Given Values-- T1 (K) 325 P1 (kPa)= 185 V1 (cm^3) = 410 r=8 T3 (K) 3420 Speed (RPM) 4800 What is the stock price per share for a stock that has a required return of 12%, an expected annual dividend of $3.15 per share in the first year, and a constant (sustainable) growth rate of dividends of 8% Why has society changed its view on smoking since 1960 solve for the inequality 6