A change over time in the inherited traits of living things is called

Please help

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

20 the compound al(nh3)2 has atoms of nitrogen.

Which member of the following food chain will be least affected by ddt, a pesticide water pollutant, if bio-magnification is occurring? algae> zooplankton> crayfish> leopard frog> large mouth bass