Answer:
If there is a change in the gene, this can further create a new generation of organisms with this change. With certain changes, it enables organisms to survive in other conditions.
Pls mark as brainliest
Answer:
matter
Explanation:
"In thermodynamics, a closed system can exchange energy (as heat or work) but not matter, with its surroundings"
The answer is external stimulus
<span>Mutations that increase fitness is type of mutations do scientists look for in a molecular clock. </span>
