Which statement explains an effect of removing spiders from the ecosystem? a. Shrews and wood mice will have less competition for grasshoppers.

b. Beetles and grasshoppers will decrease due to the loss of a predator.

c. Wood mice will begin to eat more shrews.

d. The snail population will increase due to the removal of a consumer.

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.