1. 1-1 Earth Systems

2. I. Earth Systems have ____ major parts. A
I. Earth Systems have ____ major parts. A. ________ - an organized group of parts that work together to form a whole.
________________ and the ___________ are a great examples of closed systems.

3. 1. ______________- the mixture of gases and particles that surrounds and protects the surface of Earth. Approximately: ___% Nitrogen ___ % Oxygen

4. 2. ___________- is made up of all the water on Earth in oceans, lakes, glaciers, rivers, streams, and underground.
____ of Earth covered in water. Only ___ % is freshwater. Nearly ___ % of Earth’s fresh water is frozen in glaciers & ice caps.

5. 3. _________ - includes all life on Earth, in the air, over the land, and in the waters.

6. 4. _________ - all the features on Earth’s surface– the continents, islands, and sea floor– and everything below the surface.

7. II. All four parts of the ________ _________ shape the planet’s surface. A. Earth’s surface is worn away, built up, and reshaped __________ by the atmosphere, hydrosphere, biosphere, and geosphere.