Rocks and pebbles that hit Earth's atmosphere and burn up are .
A
meteors

B
comets

C
satellites

D
keplers

The answer is A) Meteors

Explanation:

A meteor is an asteroid or other small body of matter from outer space that heats up and burns while in the atmosphere.

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."