Describe how the three layers of the embryo are formed from a single layer of cells in the blastula.

Answers

Answer 1
Answer: In some animals that lay eggs, such as frogs, gastrulation is accomplished when the hollow blastula invaginates to form an inner layer of cells called the endoderm and an outer layer of cells called the ectoderm. ... These three layers, the endoderm, the ectoderm and the mesoderm, are called the primary germ layers.

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Human skin can heal after it has been cut. What is this an example of?

Answers

A starfish like if it loses its leg it will eventually grow one back.

Answer:

Maintaining structure.

Explanation:

The cut heals to maintain structure.

Where are the chromosomes of most organisms located?

Answers

Enclosed within the nucleolus of the cell.

Chromosomes are located within the nucleus of a cell.

How do conversation practices affect natural resources?A. They cause existing natural resources to last longer.
B. They increase Earth's natural resources.
C. They increase people's ecological footprint.
D. They cause natural resources to be depleted.

Answers

the answer would be b p

About how long does water vapor remain in the air?

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 It doesn't stay up there for long and there are several different ways that it can get up there. hope this helps:)

Under what conditions can igneous rock be transformed into metamorphic rock?

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When igneous rock is put under extreme heat and pressure it then becomes metamorphic
It is usually under a heat of from 300° to 700°
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Igneous rock be transformed into metamorphic rock by heat, pressure or any other natural agencies such as intrusion by igneous rocks....



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Help please!What is the source of the carbon atoms in a plant's cells?
A)
they were created as the plant grew
B)
the Sun
C)
water molecules
D)
the environment

Answers

Answer:B. The Sun

Explanation:

Final answer:

The carbon atoms in plant cells derive from carbon dioxide in the environment through the process of photosynthesis, where it is converted into glucose and used to build cells.

Explanation:

The carbon atoms in a plant's cells primarily come from the environment, particularly from carbon dioxide in the atmosphere. This is absorbed by the plant through a process known as photosynthesis. In photosynthesis, plants use sunlight to convert carbon dioxide and water into glucose - a type of sugar - and oxygen. It's this glucose that provides the carbon atoms for the construction of plant cells. Thus, the correct answer to your question is D) the environment.

Learn more about Photosynthesis here:

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