Disease- causing microoragnisms that are carried thorugh the body in the blood or body fluids are called

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

Surrounded by microtubules, located near the nucleus. (don't try to google it) (give answer only if u know)

Radiometric dating is used to tell the absolute age of materials by studying the decay rate of radioactive isotopes. the decay rates of isotopes are constant and are expressed as .