The celestial body at the center of the solar system is a large ball of gases, mostly made up of helium and hydrogen. the hydrogen in this celestial body undergoes nuclear fusion, thus producing helium

Are substances released into the environment that in excess amounts cause damage

Which of the following are the functions of the skeletal system? blood cell production in soft marrow tissues and mineral reserves largest organ of the body for defense and support vitamin d production and pumping blood through vessels voluntary movement and contractile movement

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?