Of the following animals, which ones use carbohydrates and proteins for energetic purposes and which ones use them for structural purposes? Phytoplankton, zooplankton, mollusks, crustaceans, fish.

Which best explains why there are 64 possible codons in the genetic code and only 20 amino acids that make protiens of living organisms on earth

Name the organs of humanelemintary canal.

What is one energy transformation that is taking place in the photo? radiant energy to thermal energy thermal energy to nuclear energy chemical energy to thermal energy radiant energy to chemical energy