Earth’s Cycles of MatterH. Biology

Unit 1Chapter 3-3

In one direction – it is a one-way flowHow do biological systems move energy?

How do biological systems move matter?Matter is recycledBiological systems do not use matter, they

TRANSFORM it.

Cycles of Matter

What is a LIMITING NUTRIENT?When an ecosystem is limited by a single

nutrient.Examples:

Nitrogen – Farmer’s fields / algal ocean blooms

Cycles of MatterCYCLE: A group of processes in which matter and

energy move

Carbon Cycle: Carbon is needed as a fuel for life processes.

Nitrogen Cycle: Nitrogen is used to build proteins in cells.

Phosphorous Cycle: Phosphorous is used to build cells.

Water Cycle: Changes in form of water.

The Carbon Cycle

To Atmosphere: Burning fossil fuel, volcanoes, fires, respiration

To Biosphere: Photosynthesis, eating To Hydrosphere: Photosynthesis, eating, runoffTo Geosphere: Decomposition of organic matter

Carbon Cycle

The Carbon Cycle

To Atmosphere: Burning fossil fuel, denitrification (Nitrates into N2)

To Geosphere: Nitrogen fixation (bacteria & lightning)= turns N2 into ammonia, adding fertilizer

To Biosphere: bacteria converts ammonia into nitrates/nitrites for producers to make proteins, consumers eat producers

To Hydrosphere: Runoff, leaching

Nitrogen Cycle

The Carbon Cycle

To Atmosphere: DOESN’T HAPPENTo Geosphere: Runoff, dissolves in water, decomposersTo Biosphere: Eating, absorb through rootsTo Hydrosphere: Runoff, leaching

Phosphorous Cycle

The Carbon Cycle

To Atmosphere: Evaporation, transpirationTo Geosphere: Precipitation, condensation, infiltrationTo Biosphere: Drinking, absorbed through rootsTo Hydrosphere: Runoff, leaching