Why is generic diversity important for survival of populations

Genetic variation is an important force in evolution as it allows natural selection to increase or decrease frequency of alleles already in the population.  Genetic variation is advantageous to a population because it enables some individuals to adapt to the environment while maintaining the survival of the population.

Explanation:

your answer is b hope that

the proximity of water was an advantage to western europe and its culture was able to flourish as a result. trade and travel by sea were easier and safer in historical times.

1. there are no mountains to protect it from the sea

2. and its has wet cool summers and wet, mild winters.