The skeleton of an embryo is made up of cartilage and collagen
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The answer is; catalyst
These proteins are called enzymes. They work by lowering the activation energy of reactants and hence speed up the biochemical reaction. They are not affected in the process hence one enzyme molecule can catalyze many reactions. An example of such an enzyme is carbonic anhydrase that enables carbon dioxide to dissolve in blood plasma as carbonic acid.
Answer:
The sun
Explanation:
The is because the sun is the souce of energy
B) Genotypes are directly selected
Answer:
4
Explanation:
Because a female sex organ live the ovum shown needs to be in contact with the male sex organ the sperm to fertilize and being in the process of making said human
