Which is a resource that the National Park Service manages? memorials
wildlife refuges
ecosystems
endangered species

One reason scientists are trying to develop fuel sources from corn and sugar is because these sources are renewable fossil fuels are being depleted these crops can be widely grown all of the above

If garbage is left on the street flies in microbes can arise from nothing to feed on it true or false

Which of the following would be most useful for detecting the brain areas that are most active as a person performs mathematical calculations? a. a brain lesionb. an interneuronc. a pet scand. a hemispherectomy