Which statement best describes how pollution can impact the apex predators of the marine community? apex predators are at the bottom of the marine food chain, so accumulation of pollution in their bodies is limited. being at the top of the food chain limits how much pollution can be accumulated within the bodies of the apex predators. the apex predators are impacted by pollution in the environment because they are at the bottom of the marine food chain and accumulate pollution in their bodies. the apex predators are impacted by pollution in the environment because they are the top of the marine food chain, where accumulation of pollution is quite great.

Archeologists have discovered three sites showing conclusive evidence for the mastery of fire in tanzania, from a period slightly after the time that homo habilis was present in africa. these sites clearly were founded by homo erectus, the descendent species of homo habilis that migrated north, out of africa and into asia. homo erectus was known to have mastered fire, from ample evidence at sites in asia. there is no reason to attribute mastery of fire to homo ergaster, the descendent species of homo habilis that remained in africa. which of the following is an assumption on which the argument depends? (a) before their migration, homo erectus occupied african territory as far south as tanzania.(b) the strain of migration provided the selective pressure motivating homo erectus‘ mastery of fire.(c) homo ergaster would not have derived as much benefit from the mastery of fire as did homo erectus.(d) homo ergaster inherited all cultural knowledge from homo habilis, a species that did not have mastery of fire.(e) homo ergaster did not occupy regions as far south as tanzania until well after the time of these three sites.