A volcano erupted, covering the plant life in the area with lava. Over time, pioneer plants began growing on the lava rock. What is this new growth an example of?

Air occupies

Iwould say overuse ( but not 100% sure ) in the u.s. we tend to overuse water by leaving it running, throwing it away, taking long showers, etc.

The best way to tell its true color is to look at the minerals streak

It depends on the surface of the levels. the rougher the surface, the greater is the frictional force. for rougher surfaces, you would need to exert greater force to move the object. the concept is that, you must overcome the frictional force in order to bring the object into motion. this is the reason why we add lubricants to the joints so they could easily move. this answer was on