I believe they're called plasmids
I think it is A or C
Thanks
I'm not completely sure but I think the answer is the last one. The living things need water because it is a major component of a cell membranes answer.
Answer:
A single motor neuron, however, can innervate many muscle fibers. The combination of an individual motor neuron and all of the muscle fibers that it innervates is called a motor unit. The number of fibers innervated by a motor unit is called its innervation ratio