Superposition is used to assign ages to rock layers the newer layers on the bottom and the oldest layers on the top

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

Freckles are a dominant trait in humans. both of the girls have the genotype ff for freckles. if either one marries a man with no freckles, what are the chances that their children will have freckles?

Grasses--> mice--> cats--> coyotes suppose 10,000 units of energy are available at the level of the grasses. what is the total number of energy units lost by the time energy reaches the coyote?