PLEASE HELP With this

How many variables are altered in a good experiment? a.1 b.0 c.2 d.3

If the frequency of the p allele is .63 in the population then what is the frequency of the q allele?

Which of the following situations describes a adaptation for a mole? question 2 options: a mole is blind and cannot see underground. a mole is bright and attracts the attention of predator birds. a mole has a sensitive sense of smell to it find food underground.