The function of the pyloric sphincter is to a release acid chyme into the duodenum in periodic squirts. b release pancreatic secretions into the duodenum when chyme is present. c release bile into the duodenum when chyme is present. d retain acid chyme in the stomach until pepsin digestion is complete. e release bile and pancreatic secretions into the duodenum when chyme is present.

it is a learned trait

explanation:

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."

because the light is a great source of energy for the plants to survive. (i hope this )