Answer:
decomposes and detritivores are important because without them the amount of organic waste would overflow
Explanation:
DNA probably. It might be one of the latter rungs too, thymine, and 2 others I forgot
B organelles
Like the mitochondria
Neurotransmitters is chemical thing that has at sinaps...it function to sending electric impuls to axon..if neurotransmitters in the low level that makes a impuls slow to arrive the body..so reaction of body can slow motion..neurotrasmitters are slow when you takes a bad chemical thing as carbon monoxide and more...
The answer is D cuz I just looked up a lot of it and saw the pics so ya its D
