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:
some sort of water system, (a river/groundwater/purification plant ect.)
Explanation:
ADP converts into ATP when energy is used in the process of diffusion
The x because it is a male chromosome and have one more than a girl <span />