Which statement best describes a human influence on the biogeochemical cycles?

a) increased eutrophication caused by high levels of nitrogen and phosphorous
b) increased nitrates available due to inaccurate methods of denitrification
c) increased global warming due to alternative energy sources
d) increased amount of water that is available to freshwater ecosystems

How do cells grow and reproduce to maintain homeostasis?

Acquired mutations can result from radiation pollution toxins inheritence select all that apply

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.