Which trait is found in early embryos of both birds and humans, but then disappears from each during development?

A. soft shell
B. scales
C. tail
D. gill slits

Answers

Answer 1

Answer:

D

Explanation:

plz answer my question


Related Questions



How do the properties of water help it to shape the Earth ?

Answers

Answer:

Water moving across the earth in streams and rivers pushes along soil and breaks down pieces of rock in a process called erosion. The moving water carries away rock and soil from some areas and deposits them in other areas, creating new landforms or changing the course of a stream or river.

Explanation:

What factors are important in judging how helpful an energy resource is to us?

Answers

Supply. Energy from nuclear, coal, gas, oil, and renewable sources reacts quickly in response to the available supply (or lack thereof). This is a key contributing factor to price fluctuations, which can occur on an hourly basis.

Demand. Demand for heating, cooling, light, and processes varies in response to demand in terms of economic, technological, and efficiency measures.

Gas Storage. This is a term for energy “inventory” (since you can’t store electricity), i.e. the difference between supply and demand. Gas injections and withdrawals are announced weekly, and prices adjust accordingly.

Weather Forecasts. The predicted weather forecast, as well as actual weather events, are important considerations, affecting spot market prices and short-term contracts. Whether the forecast becomes reality is less critical to longer-term prices.

Generation Changes. While seemingly more localized, these changes can have a broad effect on the markets.

Nuclear. Retirement of older plants as they require re-licensing can cause fluctuations.
Coal. Coal plant conversions to natural gas to avoid scrubbing-technology costs can also cause fluctuations.

Transport. Across the U.S. there are severe constraints in gas pipeline and electrical transmission capacity, which take time and investment to reverse. With the difficulty of transportation, prices rise.

Global Markets. Despite the massive growth in shale gas production, major changes in global oil supplies can affect U.S. domestic energy costs.

Imports and Exports. Global oil and gas prices determine relative profits suppliers can make selling fuels domestically or overseas. All energy prices are connected to some degree.

Government Regulation. Federal (FERC) and state (PUCs) regulations can change both supply and demand costs quickly and significantly, which, as noted above, affects the cost of energy.

Financial Speculation. Like most other traded commodities, energy prices can be affected significantly by financial speculation, which is the least transparent factor of all. If a market doesn’t seem to be following the direction indicated by supply or demand-related factors, the cause is almost always financial speculation, which is largely invisible and causes unexpected movements.

The factors which are important in judging the help fullness of energy resources to us are demand, storage of gas, weather forecast, nuclear and coal.

What are the important factors in judging the helpfulness of energy?

The first factor is demand for heating, cooling, light, and processes varies in response to demand in terms of economic, technological, and efficiency measures. The second factor is Gas Storage and this has a term for energy “inventory” (since you can’t store electricity), i.e. the difference between supply and demand. Gas injections and withdrawals are announced weekly, and prices adjust accordingly.

The third factor is weather forecasts that is used to predict the weather events which are important considerations, affecting spot market prices and short-term contracts. Weather the forecast becomes reality is less critical to longer-term prices and last is generation changes while seemingly more localized, these changes can have a broad effect on the markets.

Nuclear retirement of older plants as they require re-licensing can cause fluctuations and coal plant conversions to natural gas to avoid scrubbing-technology costs can also cause fluctuations.

Therefore, The factors which are important in judging the help fullness of energy resources to us are demand, storage of gas, weather forecast, nuclear and coal.

Learn more about importance of energy here:

https://brainly.com/question/1932868

#SPJ2

What is the structure in the diagram?

Answers

Answer: A structure diagram is a conceptual modeling tool used to document the different structures that make up a system such as a database or an application.

Explanation:

Which of these is a response to an internal stimulus?

A. A sunflower turns to face the rising sun.
B. A cucumber tendril wraps around a wire.
C. A pine tree knocked sideways in a landslide grows upward in a bend.
D. Guard cells of a tomato plant leaf close when there is little water in the roots.

Answers

Answer:A a sunflower turns to face the rising sun.

Explanation:

PLZ HELP MEEEEEEEE I NEED TO FINISH THIS TO GO TO BED!!!!!!

Answers

Maybe some type of circular weather because the arrows are turning? I hope this helps

What do mitochondrial and thylakoid membranes have in common?

Answers

Answer:

Both membranes contain ATP Synthase Proteins.

Atmospheric carbon dioxide dissolves into ocen surface waters

Answers

Answer:

Carbon dioxide, which is naturally in the atmosphere, dissolves into seawater. Water and carbon dioxide combine to form carbonic acid (H2CO3), a weak acid that breaks (or “dissociates”) into hydrogen ions (H+) and bicarbonate ions (HCO3-).

Explanation:

3
The human body contains both bones and muscles. Bones are rigid, but muscles can contract
and relax to move the body. What explains this difference in body structures?
(1 Point)
A. Muscles are made of animal cells, and bones are made of plant cells
B. Bones and muscles are made of different kinds of animal cells
C. Bones contain more cells than muscles
D. Muscle cells form tissues, but bone cells do not

Answers

Answer:

awts gegegegegegegegegegegege

1. What is the Potential energy of an object that has a mass 10 kg and has a height of 50
(m)?

Answers

Answer:

24

Explanation:

1. The colour of a tomato can be represented by RR, Rr or rr. Why do we use capital
letters for some symbols and lower case letters for others? Why are there two
symbols for one trait (characteristic)?

Answers

Answer:

The capital letter is used to show a dominant trait, while a lowercase is used to represent a recessive trait.

Explanation:

If you are to take a Mother and a Father as example, and they have 3 children, the father's brown eyes as example we can show the children with capital and lower case depending on their looks. If the Father had brown eyes and 2 of his children out of 3 have brown eyes, we can represent that as a dominant trait, so it would be R. Then, if we take the father's hair color, brown, and the mothers hair color, blonde, we can say 2 of 3 children have brown hair, so 1 of 3 children have brown hair. So we now know that brown hair is a recessive trait. 2 of 3 children have blonde hair so the child with brown eyes and blonde hair could be represented like "Rr". Hope that helps, this is just my little explanation of this!

A person suffering from anemia feels tired in short walk, Why?​

Answers

Answer:

When you have anemia, your body doesn't produce enough red blood cells. You don't get enough oxygen, which makes you feel fatigued and can also cause serious health complications.

Explanation:

2. Natural selection is an example of a mechanism of
evolution. Does this mechanism produce a change in
individuals or populations? Explain!

Answers

Answer:

Populations

Explanation:

It cannot change individuals. This is because it happens over many generations. E.g. Peppered moths camouflage with bark. Black moths do not, so they are easily seen by predators. The black moths are eaten because they do not have a desirable trait for survival. The black moths cannot then pass on the trait for black wings to their offspring. However, the peppered moths can pass on their trait for peppered wings to their offspring. Overtime, the population of black moths will decrease and most of the population will have peppered wings. The trait for peppered moths will be present even after many generations and black moths will be rare.

What does natural selection act on?

Answers

Natural selection only acts on the population’s heritable traits: selecting for beneficial alleles and thus increasing their frequency in the population while selecting against deleterious alleles and thereby decreasing their frequency

What are the different parts of a bacteriophage? Where is the DNA stored in this virus?

Answers

Answer:

What are the differents parts of a bacteriophage?

The tailed phages have three major components: a capsid where the genome is packed, a tail that serves as a pipe during infection to secure transfer of genome into host cell and a special adhesive system (adsorption apparatus) at the very end of the tail that will recognise the host cell and penetrate its wall.

Where is the DNA stored in this virus?

Where is DNA stored in viruses?

The genome of most DNA-containing viruses that infect eukaryotic cells is transported (with some associated proteins) into the cell nucleus, where the cellular DNA is, of course, also found.

Explanation:

Hope it helps you!

A rainbow happens when sunlight passes through water droplets in the air.
Which of the following best explains why? *
A. Water droplets of different sizes filter out light of different colors.
B. Different chemicals in the water get energy and give off light of different colors.
C. Light of different colors travels at different speeds through different-sized water
droplets.
D. Light of different wavelengths is bent at different angles.

Answers

Answer:

b may be right answe!

.......

There are an estimated ____-____ agricultural commodities produced in Florida.

Answers

Answer:

Over 300.

Explanation:

Over 300 agricultural commodities are produced from the agriculture sector in Florida because huge amount of land of Florida is used for agriculture. In Florida, many crops are grown due to suitable climatic condition and the food produced from these crops are used as a raw materials for producing 300 different food products in the industries so we can conclude that over 300 agricultural commodities are produced from the agriculture sector in Florida.

Which type of blood vessel is most likely to clot and cause a stroke or a heart attack

Answers

Answer:

The middle cerebral artery is most often blocked during a stroke.

Explanation:

What would happen if cytokinesis did not work properly?

1) DNA replication would not occur
2) A cell would have a nucleus with too many chromosomes
3) A cell would have two nuclei
4) New daughter cells would not have enough organelles or would be missing organelles
5) a cell would be smaller in size

Answers

Answer:

If cytokinesis did not occur during mitosis the cytoplasm wouldn't be divided and there wouldn't be two identical daughter cells as a result. so the cell would remain to be at rest not being able to separate into two individual cells

Questions about natural selection

Answers

Answer:

c is just wrong because that is not how evolution works evolution is a small change in the DNA that takes a long time through many many generations not just as you or an organism get older and smarter you are not evolving

Which step happens first in DNA replication?

Answers

Answer:

Initiation

Explanation:

The initiation of DNA replication occurs in two steps. First, a so-called initiator protein unwinds a short stretch of the DNA double helix. Then, a protein known as helicase attaches to and breaks apart the hydrogen bonds between the bases on the DNA strands, thereby pulling apart the two strands. As the helicase moves along the DNA molecule, it continues breaking these hydrogen bonds and separating the two polynucleotide chains (Figure 1).

It’s already over do so pls Help ASAP I WILL GIVE BRAINLIST If u answer all of them I have provided a diagram above for the questions... yes they have to be real answers no jokes pls...
7. Using the DNA sequences of the human, chimp, and baboon above, which species are
more closely related? |
8. How did you determine your answer above?
9. What is the method of comparing DNA sequences of species called?

Answers

7. Human and Chimp
8. The DNA bases of the chimp and the human match more closely in comparison to the baboon genetic link.
9. Comparative Genomics

NEED HELP ASAP****

Which of the following is a potential drawback of heavy use of NPK fertilizers?
high soil pH
increase in nitrate levels
decrease in mineral salts
low levels of aluminum and manganese​

Answers

Answer:

b increase in nitrate levels

Explanation:

I need help this is due today thanks

Answers

Answer:

ribosomes - both

dna- both

cytoplasm - eukaryotes

no membrane organelles - prokaryotes

nucleus - eukaryotes

no nucleus - prokaryotes

uni or multi - both

membrane bound organelles - eukaryotes

mostly unicell - prokaryotes

I really need help on question two. ANY HELP WOULD BE KINDLY ACCEPTED!!!

Answers

Answer:

ok so all u need to do is explain how the cheerio gives the nutrients/energy like whats in it that gives u the energy thats all bb

Explanation:

Carbon cycles through the biosphere in all of the following processes EXCEPT
a. photosynthesis
b. transpiration
c. burning of fossil fuels
d. decomposition of plants and animals

Answers

Answer:

B

Explanation:

because Transpiration is an important part of the water cycle.

Coal is considered a nonrenewable resource because
A) it can never be replaced
B) it comes from the impact of meteors with the Earth
C) it was mismanaged by humans; it used to be a renewable resource
D) it takes millions of years to form

Answers

Answer:

D. it takes millions of years to form

Answer:

D) it takes million of years to form.

Explanation:

Renewable resources can replenish in a short period of time. However, coal can't. This is why it is a nonrenewable resource.

If a woman is a carrier for a sex-linked disorder, what is her genotype?

Answers

Answer:

X^aY

Explanation:

Most sex-linked disorders are recessive, and males do not have the y chromosome, so therfore the genotype must have the recessive allele on the X^aY

Potato crops are grown for their carbohydrate content.
Describe how you could safely test the two species of potato to compare their carbohydrate content.

test for starch

test for reducing sugars


8 mark question - IGCSE

Answers

Answer:

I hope this helps a little bit.

Help please :)
I know it’s not hard I just don’t wanna do it.

Answers

Answer:

Okay

Explanation:

The human X and Y chromosomes

A. are of approximately equal size and number of genes.

B. include only genes that govern sex determination.

C. are both present in every somatic cell of males and females alike.

D. are almost entirely homologous, despite their different names.

E. include genes that determine an individual's sex.

Answers

Answer will be ‘E’, include genes that determines an individual’s sex.
Hope it helps you.
Other Questions
Is y=-1/2x+2 linear? Im pretty sure it is but just wanna be sure Brian was thinking of a number . Brian doubles it and gets an answer of 93.3.what was the original number? For what value of d would the statement 6d = 30 be true?A. d = 4B. d = 5C. d = 6D. d = 7 Calculate the speed at Point F and Point E A quality-assurance worker wants to systematically sample 120 glass jars each day from a conveyor belt in a factory that puts out 3,600 jars each day. If the worker will select every kth jar, what is the best value of k for the worker to use? Enter a whole number. *****ECONOMICS PLZ HELLLLLP*****in economics, an exchange rate describes:A. how much one currency is worth compared to another B. the total value of a country imports and exports c. how quickly prices are rising in an international market d. the amount of currency available in fixed exchange Find the sum of (x+5), (-4x-2), and (2x-1)Show your work please Can someone please help me i will literally give you my number i dont have enough points to put yall the questions on here & i need the answers its math The volume of the box is 450 in?. The length is 10 inches and the width is 5 inches.h5 in.10 in.What is the height, h, of the box?A. 7 in.B. 9 in.C. 15 in.D. 30 in. Las edades de cuatro hermanos forman una progresin aritmtica, y su suma es 32 aos. El mayor tiene 6 aos ms que el menor. Halla las edades de los cuatro hermanos. According to Greek Mythology, who was the king of the gods?PoseidonApolloZeus brainliest to the answer. please help ! can someone help me plz This table lists plant adaptations and their functions. AdaptationFunctionfloweraids in reproductionbark?cuticlestops water lossthornsstops predatorsWhich phrase correctly completes the chart?A.stores seedsB.provides protectionC.attracts pollinatorsD.carries water PLEASE HELP!!!! WHAT IS THE CIRCUMFERENCE??? calculate the perimeter of a quarter circle 2mm use pi=3.14 20 points | If you're good at math, please help me with this 9th grade math, thank you Which of these was the founder of Daoism? (4 points) A/ Laozi B/ Confucius C/ Han fei Tzu D/ Chengho HELP ME OUT ITS DUE TODAYYY A turtle is saying something. What is he saying. Who is talking to? Story Plsss help me! What are the domain and range of this graph?