Stars are formed in clouds of dust and gas (nebulae.) Nuclear reactions at the center (core) of stars gives enough energy to make them shine brightly for many, many years. The exact l<span>ifetime of a star depends on its size.</span>
Answer:
I NEED SOME POINTS TO ASK A QUESTION.
Explanation:
Answer:
True
Explanation:
It's because ecology involves the environment and living things