Compost preserve the health of soil because it

How are extrusive rocks formed? magma gets trapped inside earth and cools to rock. volcanoes apply force to solid rocks and eject them. magma gets forced to earth’s surface and cools to rock. volcanoes trap lava inside earth, where it cools to rock.

In what for do plants utilize nitrogen? why do they need nitrogen?

Where can you find prokaryotic and eukaryotic cells?