The belief that genotype expression depends on environmental experience and how we respond to the environment depends on the genes we possess defines the concept of

The choices for the above question are:
a.single gene-pair inheritance.
b.shared environmental influence.
c.gene-environment interaction.
d.polygenetic inheritance.

The concept which is defined is gene-environment interaction. The answer to your question is C. I hope this is the answer that you were looking for. 

The right answer is b hydrogen bonds!

The moths will eventually become extinct