4. How do minerals become part of the soil? A. Minerals must be added to the soil by man.
B. Minerals come from rocks.
C. Minerals come from decayed matter that was once alive

Compare and contrast physical changes with chemical changes.

Asolid that forms and separates from a liquid mixture is called

Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?