How does the roots stem leaves and flower work together to keep it alive

The similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between organisms in both locations?

Which description provides the best objective summary of the article in the passage?

Amino acids contain the elements carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. of the 20 amino acids found in humans, 11 are called "nonessential" because they can be manufactured by the body when needed. which elements in these 11 amino acids are commonly obtained from the metabolism of sugar molecules?