In order to conserve resources, Evelyn uses her old homework as scrap paper and never throws away paper with writing only on one side,
What kind of conservation is Evelyn practicing?
A. Recycling
B. Waste
C. Renewal
D. Reuse

Evelyn is using reuse as a form of conservation

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."

several tissues working together form an organ, and several organs together make up an organisms.

the group of cell that carries out special jobs are tissue.