Which is an example of how the peripheral nervous system the body maintain its internal environment? a. muscles produce keratin so that hair can grow stronger. b. sweat glands break down the food that is consumed. c. muscles contract rapidly to produce heat on a cold day. d. the brain recalls information to take a test.

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.

Drag each tile to the correct location. match each trait that an organism displays to a reproductive strategy.

In which area of the neuron is an action potential initially generated?