The boundary separates them<span />
Matter can be recycled, but energy cannot. Also, only 10% of the energy is passed through each trophic level.
Answer:
Polymerase chain reaction, or PCR, is a laboratory technique used to make multiple copies of a segment of DNA. PCR is very precise and can be used to amplify, or copy, a specific DNA target from a mixture of DNA molecules.
Explanation:
Glyccocayx sugar coat that surrounds cells
