Why do sound waves move faster through the ground than through the air

On a distance vs time graph the line of an object at rest is a

Select each correct answer. more than one answer may be correct. which of the following is a characteristic of unicellular organisms? they can possess tissues and organs. all of their functions are performed by a single cell. they are usually microscopic. each of their cells is specialized to perform a specific function.

The continuous release of nuclear energy caused when one fission reaction triggered more nuclear reactions is a