Which statement best summarizes the principle of faunal succession? Different combinations of fossils are found in different strata.
O Some fossils are found in multiple strata, other fossils only in one stratum.
O Some strata contain marine fossils, while others contain fossils of terrestrial organisms.
O Fossils in older strata are more primitive than fossils in more recent strata.

African penguins, which inhabit the coasts of southern africa, were classified as an endangered species in 2010. two significant threats to their survival are ecosystem damage from oil spills and overfishing by humans. overfishing depletes the food supply of african penguins. the best method to reduce the threat of overfishing would be to . the risk of oil spills could be reduced by increasing the use of , which should oil consumption. if an oil spill does occur, could be used to remove the oil so the ecosystem may more quickly recover.