1 The one way flow of high quality energy from the sun through living things in | Course Hero

2)

The cycling of matter or nutrients (the atoms, ions, and compounds needed for survival

by living organisms) through parts of the biosphere. Because the earth is closed to

significant inputs of matter from space, its essentially fixed supply of nutrients must be

continually recycled to support life. Nutrient movements in ecosystems and in the

biosphere are round-trips, which can take from seconds to centuries to complete. The

law of conservation of matter governs this nutrient cycling process.

3)

Gravity, which allows the planet to hold onto its atmosphere and helps to enable the

movement and cycling of chemicals through the air, water, soil, and organisms.

4.

Describe what happens to solar energy as it flows to and from the earth.