Which of the following is NOT evidence that whales and dolphins changed over time and once lived on land?

1. They have lungs



2. They have arm bones that look like those bones of land-dwelling organisms.



3. They have small hairs.



4. They live in the water.

Answers

Answer 1
.........2 is not evidence

Related Questions

define metabolic water​

Answers

Answer:

Metabolic water refers to water created inside a living organism through their metabolism, by oxidizing energy containing substances in their food.

Explanation:

hope this helps you.

Which statement best predicts why a cell's progression through the cell cycle might be halted by the G1/S checkpoint?

Answers

Answer:

The missing options are:

A. Spindle fibers have not correctly attached to chromosomes.

B. Damage occurred to DNA when it was being copied in G1.

C. There are not enough nucleotides available to construct new DNA.

D. Proteins necessary for M phase of the cell cycle have not been produced.

The correct option is C.There are not enough nucleotides available to construct new DNA.

Explanation:

During the G1 phase, the cell grows in size since it prepares its organelles and molecule combinations for the next phase of the cell cycle, the S phase. Before the cell transitions to the S phase, it has to pass through a checkpoint that makes sure that there are no mutations, it has grown enough, and has the necessary molecules for the next phase, which is the synthesis of DNA. If there are not enough nucleotides, the cell will not be able to synthesize new DNA in the S phase, so the checkpoint stops the cells from moving to this phase till it has all the necessary things to do it.

hello please help i’ll give brainliest

Answers

Answer: D

Explanation: D

HELP NEEDED ASAP 20 POINTS


Describe the mass and surface temperature of the supergiant stars in your own words

Answers

Supergiant stars can have masses from 10 to 70 times greater than our Sun. When it comes to brightness, some of them can be from 30,000 times or brighter than our Sun. The temperature range of a supergiant spans from around 3,450 K to 20,000 K. The absolute visual magnitudes between -3 and -8.

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Answers

Rotates around the galactic center

Which is the answer?
In the nucleus of a cell, the dna is usually visible as

A- a dense region called the nucleolus

b- the nuclear envelope

C - granular material called chromatin

D. Condensed bodies called chloroplasts

Answers

Answer:

C. Granular material called chromatin

Which structure provides a link between the nervous and endocrine systems?
A. pituitary gland
B. hypothalamus
C. adrenal gland
D. thyroid gland

Answers

Answer:

B

Explanation:

Based on the living things in the pyramid, please tell me what examples would fit into these categories
Primacy Producers, primary consumers, secondary consumers, and tertiary consumers.

Answers

Answer:

Primacy Producers----- Oak tree , primary consumers------ Caterpillars , secondary consumers ------- blue jays, and tertiary consumers ----- hawk.

Explanation:

Oak tree refers to the primacy Producers in this pyramid because it produces food by using the solar energy. Caterpillars are primary consumers that feeds on the producers and also known as herbivores, blue jays are the secondary consumers that feeds on the primary consumer which is the caterpillar, and tertiary consumers are the hawk that feeds on the secondary consumer i.e. blue jays. In this way, energy flows in the food chain of an ecosystem. During this flow of energy, only 10% of energy is transferred from one trophic level to another while the remaining releases in the environment in the form of heat energy.

What Benefits does the environment have on humans??

Answers

We would literally die if we didn’t have an environment.

PLS HELP ASAP
What percentage of the human body is made up of water?
A) 10%
B) 30%
C) 50%
D) 70%
E) 90%

Answers

Answer:

According to question,Option D is the correct

Explanation:

Up to 60% of the human adult body is water. According to H.H. Mitchell, Journal of Biological Chemistry 158, the brain and heart are composed of 73% water, and the lungs are about 83% water. The skin contains 64% water, muscles and kidneys are 79%, and even the bones are watery: 31%.

Cual son las consecuencias y el tratamiento del crecimiento lento en niños? Plis me pueden decir con explicación

Answers

Answer:

Efecto adverso sobre la salud.

Explicación:

El crecimiento lento de los niños afecta la salud de los niños, haciéndolos más susceptibles a enfermedades e infecciones, pero también afecta su desarrollo mental y físico. Las inyecciones de hormona del crecimiento y los medicamentos de reemplazo de la hormona tiroidea son tratamientos que se usan para tratar el crecimiento lento en los niños. La deficiencia de la hormona del crecimiento se puede tratar mediante inyecciones de hormona del crecimiento. Los medicamentos de reemplazo de la hormona tiroidea se utilizan para compensar la hipoactividad de la glándula tiroides del niño.

question in pic! will give brainliest

Answers

Answer:

denitrification

Explanation:

Denitrification occurs when N is lost through the conversion of nitrate to gaseous forms of N, such as nitric oxide, nitrous oxide and dinitrogen gas. This occurs when the soil is saturated and the bacteria use nitrate as an oxygen source. De-nitrification is common in poorly drained soils.

What are two of the products of the Krebs cycle?​

Answers

Following glycolysis, the mechanism of cellular respiration involves another multi-step process—the Krebs cycle, which is also called the citric acid cycle or the tricarboxylic acid cycle. The Krebs cycle uses the two molecules of pyruvic acid formed in glycolysis and yields high-energy molecules of NADH and flavin adenine dinucleotide (FADH2), as well as some ATP.

the___
controls reflexes.

a. medulla
b. cerebellum
c. cerebrum

Answers

the cerebellum controls reflexes.
B because it controls the reflexes


while the largest member is about 30 centimeters long. Which of these lists best describes this order?

Answers

Is there a picture provided?

A study has shown 75% of teenage boys drink 1 liter of soda per day. How many 250 ML cans of soda would a boy drink in a week if he drank 1L per day?

Answers

28 cans of 250 ML soda in a week.

According to the study, if the boy drinks one liter of soda per day then, he will drink 28 soda cans of 250mL volume in a week (seven days). Each day, he drink four cans of 250mL.

What is Soda drink?

A soft drink is a drink which usually contains water, artificial sweeteners, and a natural or artificial flavoring agent. The sweetener used in the soda drink can be a sugar, high-fructose corn syrup, fruit juice, a sugar substitute, or combination of these compounds. They may also contain caffeine, coloring, preservatives, and other ingredients.

If a boy drinks 1 liter of soda per day. Then, the number of cans of 250mL soda he drinks in a day will be:

1 liter = 1000mL

Number of cans which a boy drinks in a day = 1000mL/ 250mL

Number of cans of soda = 4

The number of cans which a boy drink in a week i.e., 7 days = Number of cans which a boy drink in a day × number of days in a week

Therefore, the number of cans which a boy drink in a week = 4 × 7

The number of cans of soda = 28

Therefore, the boy drinks 28 cans of soda in a week.

Learn more about Soda here:

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The following picture is what part cell division?

Answers

Answer:

ANNYEONG HASEYO JONEON BANGTANSONYEONDAN HOGEON MAKNAE JEON JUNGKOOK IMNIDA

How does the solar system work

Answers

Answer:

Solar technologies convert sunlight into electrical energy either through photovoltaic (PV) panels or through mirrors that concentrate solar radiation. This energy can be used to generate electricity or be stored in batteries or thermal storage.

Answer:

Solar technologies convert sunlight into electrical energy even through photovoltaic PV panels or through mirrors that concentrate solar radiation. This energy can be used to generate or be stored in batteries or thermal storage.

Genes are responsible for:
OA.
all traits of an organism.
OB.
all inherited traits of an organism.
OC.
no traits of an organism.
OD.
all preferences of an organism.

Answers

Answer: A) All the traits of an organism

Explanation: Genes are responible for type of hair or hair color, eye color or eye shape, skin tone, body figure, height, and etc.

Biological washing powders contain protein-, fat- and carbohydrate-digesting
enzymes to help remove stains. Name two other uses for enzymes in the home
or industry.

Answers

An enzyme called rennin is used in the coagulation of milk to make cheese and enzymes in yeast ferment break down sugar molecules in grain or fruit to make ethanol that is used for wine making.

The name of some enzymes that use in industries are Proteinase, and  Lipases.

Proteinases:

These are the  enzyme that can degenerate the protein structure, so, it become easier to remove stains.

Lipases:

These are the enzymes that degrade the fat structure, so it is easier to remove fatty stains.

Therefore, the name of some enzymes that use in industries are Proteinase, and  Lipases.

To know more about Enzymes,

https://brainly.com/question/24811456

20 POINTS
learned behaviors that frogs have?!!! i need 5 but any that you know is ok and i’ll give brainliesttt

Answers

Ếch đồng (Hoplobatrachus rugulosus) là một loài ếch trong họ Dicroglossidae. Nó được tìm thấy ở Campuchia, Trung Quốc, Hồng Kông, Lào, Ma Cao, Malaysia, Myanmar, Philippines, Đài Loan, Thái Lan và Việt Nam. Môi trường sống tự nhiên của nó là đầm lầy nước ngọt, đầm lầy nước ngọt ngắt quãng, đất nông nghiệp, đất đồng cỏ, vườn nông thôn, vùng đô thị, ao, đầm nuôi trồng thủy sản, đào lộ thiên, đất tưới tiêu, đất nông nghiệp bị ngập lụt theo mùa, kênh và mương. Chúng sinh sản vào mùa xuân đến đầu mùa hè.

Answer:

Common frogs are most active at night

hibernate during the winter in pond mud or under piles of rotting leaves, logs or stones.

They can breathe through their skin as well as their lungs.

They can emerge to forage during warm spells in the south west of the country.

In spring males croak to attract females.

Explanation:

Photosynthesis takes place in the _______________ and releases __________________.
A. mitochondria, oxygen
B. chloroplast, oxygen
C. mitochondria, carbon dioxide
D. chloroplast, carbon dioxide

Answers

Answer:

B. chloroplast, oxygen

Explanation:

This is because plants take in the carbon, water, air,and it transforms the water into oxygen and carbon into glucose. So it absorbs light, and the chloroplasts are special structures that are responsible for that absorption of light, They are green, because of chlorophyll, which gives the green pigment to leafs

photosynthesis takes place inside them, so they can absorb light to start the process.

lol yea i need help again

Answers

It has two strands

Hope this helped :))

Two samples of radioactive material from the same rock is prepared for testing. Sample A is cut into a 2 inch cube. Sample B is crushed into a fine powder. Compared to the half-life of the material in Sample A, the half-life of the material in the powdered Sample B is:

Answers

Answer:

The same

Explanation:

Half life is the time taken for the number of atoms in a radioactive sample to decrease to half of the initial number of atoms. It is also the time taken for the activity of a radioactive sample to decrease to half of its original value.

If samples A and B were obtained from the same rock, then they contain the same number of atoms having the same initial activity even though the samples were not prepared in the same way for analysis.

Hence, samples A and B have the same half life.

Students filled two beakers with 500 mL of water each. They placed three drops of live algae culture into each of the beakers, then used a dissolved oxygen sensor to measure the oxygen content of the water in each beaker. The students then stirred 5 mL of nitrogen-rich fertilizer into one of the beakers, and labeled the beaker A. Nothing was added to the second beaker, which the students labeled B. Both beakers were placed under a high-intensity light over a weekend. On Monday, the students measured the amount of oxygen in the water of each of the beakers. Which aspect of the watershed were these students trying to model?

A. The effect of fertilizer-contaminated surface water flowing as runoff into a waterway

B. How stagnant or non-flowing water can result in providing a habitat for living organisms such as algae

C. The inverse relationship between water, light, oxygen, and photosynthesis

D. How light and oxygen levels in water affect the growth of algae within a system over time

Answers

D. How light and oxygen levels in water affect the growth of algae within a system over time

The manure pit has been emptied and Ted now has to enter the manure pit to perform some maintenance work. He is hooked up to a lifeline and his colleague Sam is outside the pit ready to assist should a rescue become necessary. Do you notice any issues in this scenario?

The pit if empty so there is no need for additional precautions

Ted is wearing a lifeline so there is no need for additional precautions

Sam should be wearing a self-contained breathing apparatus


Ted should be wearing a self-contained breathing apparatus​

Answers

Answer:

D. Ted should be wearing a self-contained breathing apparatus​

Explanation:

According to this question, Ted has entered into an empty pit in order to do some maintenance work and his colleague, Sam, is outside the pit ready to assist him in case of emergency.

It is necessary to take additional precautions even if Ted is tied to a lifeline or the pit is empty. However, the additional precaution should be that Ted should be wearing a self-contained breathing apparatus​ (SCBA) in case of breathing or respiratory problems down the pit.

he says “heart muscles barely regenerate “ do you remember what stage of the cell cycle that is ?

Answers

You that one was righ



How can individuals help to conserve the resources in the picture?

Answers

Individuals can help conserve the resources in the photo by protecting water quality and/or practice low impact fishing .

7. In an abandoned field, the gradual replacement of grasses by shrubs and then by trees is known as A) predation B) saprophytism C) ecological succession D) transfer of energy​

Answers

Answer:

C. Ecological Succession.

Explanation:

A is incorrect because predation is the act of an animal preying on another animal for food which has nothing to do with grass and trees. B is incorrect because saprophytism is the ability of certain plants to live in dead or decaying organic matter. For example, imagine mushrooms growing on decaying trees. That still doesn't explain what the REPLACEMENT of grasses, bushes, and trees are called. D is incorrect because that is energy transferring to another, that answer wouldn't make sense. From what I know, ecological succession is the process of change in the species structure of an ecological community over time. So, if there is an abandoned field but grasses and trees are slowly popping up there over time (There's a lot more to it) then C, ecological succession is your answer.

Hope this helps! :3

Why was the evolution of a vascular system important for land plants?

Answers

The plant vascular system carries out two essential functions, namely the delivery of resources (water, essential mineral nutrients, sugars and amino acids) to the various plant organs, and provision of mechanical support.
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