It's the stimulus because that's what triggers the salivation which is the reaction
Answer:
"A pendulum consists of only a few components including a length of string or wire, a bob or some type of weight and a fixed point."
Explanation:
Answer:
Recombination occurs when two molecules of DNA exchange pieces of their genetic material with each other. One of the most notable examples of recombination takes place during meiosis (specifically, during prophase I), when homologous chromosomes line up in pairs and swap segments of DNA.
Answer:
an amino acid group from a molecule