Apurpose is to have any of the following except:
a. an objective.
b. a goal.
c. an intention.
d. a bad dream.

In a relatively small iguana population the allelic frequency is tracked for three generations. webbing is a recessive allele; no webbing is the dominant allele. during one very rainy spring and summer, a flood washes all the iguana without webbed feet out to sea. by the fall, and three generations later, you have the gene pool seen here.

Long term exposure to waves can cause sunburns and skin cancer.

What is the cause hearing loss in human being