Organisms that can produce their own food and feed themselves are called

Autotrophs

Explanation: Autotrophs are organisms that often produce their own food by using sunlight, carbon dioxide, and water to form sugars which they can use for energy.

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."