What is the purpose of nature selection a)to increase the frequency of desired allies in a population b)to limit the genetic variation of a population c)to keep life going even as the environment changes

Where would you most likely not find an alpine glacier? the himalayas the rockies the andes flat areas of antarctica

During sunny hours, a large amount of build up between the hours of 1: 00-5: 00 pm. a. ozone b. mercury c. lead d. sulfuric acid

What kind of seafood would you expect to have the highest levels of mercury and why? kelp, because they use the sun to photosynthesize on the bottom trophic level. oysters, because they filter feed on plankton on a lower trophic level. small fish, because they eat plankton on a higher trophic level. sharks, because they feed on organisms on a higher trophic level.