Why do species with more than 40 zygotes all have external development?

Are salt and soap nutrients or toxins for yeast? explain.

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?

Give three examples of plant activities that are affected by circadian rhythms and natural fluctuations in the length of daylight?