The Physical World

The Physical World

by Jake Ebeling

Multiple Choice

Why would a geographer think understanding our solar system is important?

• to track asteroids and comets so they don’t collide with Earth

• to map the positions and orbits of our solar system's planets around the sun

• to understand how Earth fits into this system, much as how different areas of Earth fit together

• to determine which planets may have supported life in the past or be able to sustain life now

Open Ended

What organisms might live in the hydrosphere?