Answer:
Anti-nuclear groups believe that nuclear power is a risk to people and the environment. These include health risks and environmental damage from uranium mining, processing and transport, the risk of nuclear weapons proliferation, the unsolved problem of nuclear waste, and the possibility of further serious accidents.
Something in nature that people use is a natural resource.
A selectively permeable membrane allows materials (some substances or molecules) needed for survival in and out. (Like a filter)
Phagocytosis is to eating as pinocytosis is to drinking.