The brightness of a star depends on what three factors?

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?