help pls easy question Definition: This is a behavior in which an animal learns that a particular stimulus and its response to that stimulus will lead to a good or bad result. Example: A child learns that touching a hot object will cause pain.

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."

synapse nervous system

it depends on how much it could carry.