1. Earth’s Cycles of Matter
Biology
Unit 1
Chapter 3-3

2. Vocabulary
Atmosphere
Biosphere
Geosphere
Hydrosphere

3. Cycles of Matter In one direction – it is a one-way flow
How do biological systems move energy?
In one direction – it is a one-way flow
How do biological systems move matter?
Matter is recycled
Biological systems do not use matter, they TRANSFORM it.

4. Cycles of Matter When an ecosystem is limited by a single nutrient.
CYCLE: A group of processes in which matter and energy move
What is a LIMITING NUTRIENT?
When an ecosystem is limited by a single nutrient.
Examples:
Nitrogen –
Farmer’s fields / algal ocean blooms

5. Carbon Cycle: Needed as a fuel for life processes.
Nitrogen Cycle: Used to build proteins in cells.
Phosphorous Cycle: To build cells.
Water Cycle: Changes in form of water.

6. The Carbon Cycle Carbon Cycle
To Atmosphere (air): Burning fossil fuel, volcanoes, fires, respiration
To Geosphere (earth): Decomposition of organic matter
To Biosphere (organisms): Photosynthesis, eating
To Hydrosphere (ocean): Photosynthesis, eating, runoff

7. The Carbon Cycle Nitrogen Cycle
To Atmosphere: Burning fossil fuel, denitrification
To Geosphere: Nitrogen fixation (bacteria & lightning), fertilizer
To Biosphere: Eating, bacteria fixation
To Hydrosphere: Runoff, leaching

8. The Carbon Cycle Phosphorous Cycle To Atmosphere: DOESN’T HAPPEN
To Geosphere: Runoff, dissolves in water, decomposers
To Biosphere: Eating, absorb through roots
To Hydrosphere: Runoff, leaching

9. The Carbon Cycle To Atmosphere: Evaporation, transpiration
To Geosphere: Precipitation, condensation, infiltration
To Biosphere: Drinking, absorbed through roots
To Hydrosphere: Runoff, leaching