Earth's Systems

3. The system or sphere of air and gases surrounding Earth, essential for life and weather.
6. Rain mixed with pollution that can damage trees, buildings, and water life.
9. When two or more things rely on one another to function or survive.
11. A prefix that means life or all living organisms.
13. All the places on Earth where living things, like plants and animals, exist.
15. All the water on Earth, including oceans, rivers, lakes, and frozen ice.
17. The part of the Earth that contains the rocky structure where we can find things like volcanoes and mountains.

1. A prefix meaning vapor, air, or gas.
2. When gases in the atmosphere trap the sun's heat, warming the Earth's surface.
4. To recognize or point out a difference between two or more things.
5. The breaking down of rocks into smaller pieces by wind, water, and ice.
7. A _______________ has parts that interact with one another, like the four spheres of Earth.
8. The thin, outermost layer of Earth's surface that we walk on.
10. A flowing river will cause _____________ along the banks, which will also change the shape of the river.
12. The rigid, rocky outer layer of Earth, including the crust and upper mantle.
14. A prefix that means all the water on Earth.
16. _________ means relating to the land or the sphere where all non-living things are located.