Answer:
The functional units of dna that contain the instructions for making one or more proteins are the "Genes".
Velocity is how fast the river is moving, the Volume is how much is in the river!
Well scientists will be able to study organisms more efficiently, and they will be able to organize them into groups based on their cell structure, behavior, habitat, similarity, and more.
I think the answer is C but i am sorry if i am wrong i took this test but i am pretty sure it is C have a good day and good luck on the test