In Humans, the Three Germ Layers Are Established When The

question 162

Multiple Choice

In humans, the three germ layers are established when the:

• A)blastula forms.
• B)inner cell mass of the blastula forms.
• C)blastula implants into the uterine wall.
• D)cells of the inner cell mass reorganize themselves into the gastrula.
• E)gastrula implants into the uterine wall.

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Definitions:

World Population

The total number of humans currently living on Earth.

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The increase in the number of individuals in a population.

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A method of quantifying and numerically marking a country's environmental performance in different policy categories.

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