Which physical property allows a mixture of sand, rocks, and gravel to be separated by a sieve? Answer choices:

A:Size
B:Solubility
C:Shape
D:Magnetism

HELP PLEASE this is science not chemistry

In which environment would primary succession occur? a forest with a few remaining trees after a recent wildfire an area of exposed rock after a glacier melts away beach that is exposed to the air at low tide an abandoned baseball field in a small town

Explain that newton first law, second law and third law of motion?

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.