Sunlight is the main energy source
Answer:
Cancer is unchecked cell growth. Mutations in genes can cause cancer by accelerating cell division rates or inhibiting normal controls on the system, such as cell cycle arrest or programmed cell death. As a mass of cancerous cells grows, it can develop into a tumor.
Explanation:
Parasympathetic will return her heartbeat back to normal. This nervous system is responsible for regulating the body's unconscious actions, and stabilizes it.
Answer:
natural selection is natural, selective breeding is not. Natural selection is when the best genes are passed down. Selective is when the best of an animal group are forced to mate
Explanation:
Answser
it migth be B i am not sure