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Biogeochemical cycles notes

Topic:Biogeochemical Cycles Notes


Biogeochemical cycles notes

The Ecosphere is a completely sealed ecosystem containing active microorganisms. Simply provide it with indirect natural or artificial light and warmth and the ecosystem will thrive without needing further attention. The light allows the micro algae to produce oxygen and food for the shrimp, which in turn produce carbon dioxide and nutrients for the algae to grow.



Biogeochemical cycles notes

Generalized BGC Cycle huge inputs of

The major parts of the biosphere are connected by the flow of chemical elements & compounds. In many of these cycles, the biota plays an important role. Matter from the Earth’s interior is released by volcanoes. The atmosphere exchanges some compounds & elements rapidly with the biota & oceans. Exchanges of matter between rocks, soils, & the oceans are generally slower.


Carbon oxygen cycle
Carbon-Oxygen Cycle huge inputs of


Biogeochemical cycles notes

Carbon-Oxygen Cycle huge inputs of


Biogeochemical cycles notes

Rhizobia (microbial bacteria) on the Root Hair of a Clover Plant: Mutualism

The Rhizobium nitrogen “fixer” makes threads that firmly attach to the root hair.


Nitrogen cycle
Nitrogen Cycle Plant: Mutualism


Stop here

Stop Here Plant: Mutualism

We’ll finish next class!

Work on the Nitrogen Cycle Handout


Biogeochemical cycles notes

The figure below is an excellent example of the ability of wind to carry and deposit sediment.

Great Sand Dunes National Monument, Colorado. Sand accumulates in the San Luis Valley on the windward side of the Sangre de Cristo Mountains, which lie in the background.


Biogeochemical cycles notes

A rock in southern Iceland fragmented by freeze-thaw action. wind to carry and deposit sediment.

Frost action occurs when water in cracks and joints of rocks freeze and expand.


Biogeochemical cycles notes

Water Erosion wind to carry and deposit sediment.

Example of the ability of rivers to cut downward into the rising landscapes; Downcutting of the San Juan River, Utah.


Mineral cycle
Mineral Cycle wind to carry and deposit sediment.


Biogeochemical cycles notes

Think About It ! wind to carry and deposit sediment. What happens when you take a soda can from the refrigerator on a hot summer day? Can you explain what actually happens when the can “sweats”? What process in the hydrologic cycle is occurring on the surface of the can?


Water cycle
Water Cycle wind to carry and deposit sediment.


Don t forget to
Don’t Forget to… wind to carry and deposit sediment.

  • Read activity instructions all the way thru b4 u start!!!

  • Listen 2 me……I can’t help if I can’t talk bcuz u r!!!