What does a human neuron use to send a signal to the brain in response to a stimulus such as touch? A. myosin and actin

B. contraction and relaxation

C. respiration and absorption

D. electrical signals and chemical neurotransmitters

Food webs - transferring energy and matter from one level to another. here you see four food webs. one or more are incorrect. which food web(s) show the correct sequence of organisms, from start to top level consumer? a) a b) d c) c d) a and d

The relationship between intron and exon

All other things being equal the size of a population will decrease if