Which is an example of an external response to stimuli?

a.
a rabbit sensing a predator is approaching

b.
the body recognizing it is constantly feeling thirsty

c.
getting water to drink to quench the body's thirst

d.
a rabbit running from a predator that is chasing it

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."

bru what tyep of qus is dis

its temperature is increasing. this causes molecular vibrations to increase.