Answer:
Denaturing
Explanation:
Denaturing is the process by which and enzyme(protein) looses its shape, and therefore results in the substrate not being able to bind to the active site. This means that the protein looses its function.
Are you asking for DNA or chromosomes or something? You asked for which of the following but then dont give the following
BOTTLENECK EFFECT IS THE ANSWER TO THIS QUESTION
I think its reforestation