Answer:
Restriction Enzymes
Explanation:
It is restriction enzymes specifically, which are used to cut DNA into fragments. Restriction enzymes can be regarded as biological scalpels which can produce either a blunt end or sticky end in DNA.
-Melting Icebergs, glaciers, and ice sheets
-sea level rise
-wildfire
Most bacterias are heterotrophs. Meaning they can't make their one good ( sadly :3)