Which phrase describes a characteristic of a scientific law?

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?

Which is the best example of plant tissue? the answer is d (just took the test)

Based on her survey, which advertising mediums will work best to publicize leslie's in-store specials?