BIOGEOCHEMICAL CYCLES name:

Links are provided for additional information. You can open this worksheet from the www.wahsbiology.wikispaces.com page and right click on the links and chose open hyperlink.

Water Cycle

http://uccpbank.k12hsn.org/courses/APEnvironmentalScience/course%20files/multimedia/lesson07/animations/2b_Water_Cycle.html

http://www.biology.ualberta.ca/facilities/multimedia/uploads/alberta/watercycle.html

http://www.epa.gov/safewater/kids/flash/flash_watercycle.html

water use – Alberta tomorrow: http://www.youtube.com/watch?feature=endscreen&v=5v2OUOqERwA&NR=1

Number the following terms using the diagram:

In the water cycle, ______in the clouds causes ______to fall to the earth’s surface. Once on the ground, may end up in water bodies directly, or be absorbed into the ______. Once in the soil, the water may be used by producers in the process of ______, or may eventually reach ground water. Energy from the ______causes water on earth to ______, returning it back to the ______. Water may also return to the ______from plants through the process of ______.

1.  Could the water cycle proceed as a cycle if there were no living things on earth?? Explain.

2.  List any biotic components to the water cycle:

3.  List any abiotic processes in the water cycle:

4.  What powers the water cycle?

5.  What industries interfere with the water cycle?

Carbon Cycle

http://www.sumanasinc.com/webcontent/animations/content/globalcarboncycle.html

http://www.epa.gov/climatechange/kids/basics/today/carbon-dioxide.html

http://highered.mcgraw-hill.com/olcweb/cgi/pluginpop.cgi?it=swf::550::400::/sites/dl/free/0078757150/383926/The_Carbon_Cycle.swf::The%20Carbon%20Cycle

carbon storage and ghgs movie – Alberta tomorrow: http://www.youtube.com/watch?v=rtE25SiDDyc

Number the following terms using the diagram:

Carbon dioxide can be found in the form of ______in the atmosphere, or can be dissolved in ______. CO2 is used by producers in the process of ______. In this process, the carbon in

CO2 is incorporated into a molecule of ______. Animals acquire ______when

they ______producers. CO2 is released back to the atmosphere by plants and animals through the process of

______. Decomposition of waste and the remains of plants and animals releases CO2 back to the ______. The same biotic processes can take place in water bodies.

If decomposition is delayed, under certain conditions, the remains of plants and animals may be converted

into ______including oil, gas and coal. The burning of fossil fuels, as well as natural processes such as ______and ______releases CO2 back to the atmosphere.

1.  Which complementary biotic processes form an integral part of the carbon cycle?

2.  Explain how the earth’s atmosphere produces the greenhouse effect.

3.  What processes in the carbon cycle increase carbon dioxide?

4.  What processes in the carbon cycle decrease carbon dioxide?

Nitrogen Cycle

http://bcs.whfreeman.com/thelifewire/content/chp58/5802004.html

http://www.teachersdomain.org/asset/lsps07_int_nitrogen/

Water quality – Alberta tomorrow http://www.youtube.com/watch?v=7I4AN6eWp1w

Number the following terms using the diagram:

The reservoir of nitrogen is found in the ______in the form of nitrogen ______. There are ______ways in which this nitrogen can be converted into forms useable to living organisms. Lightning causes ______to combine with oxygen to form ______. This newly formed molecule dissolves in rain water and can enter the soil. ______bacteria, usually found in soil, or in the root nodules of legumes such as clover and peas, can also form nitrates. If excess nitrates are made in the root nodules, it moves into the soil.

Plants use the nitrates to make DNA, and amino acids which are joined together to make proteins. Animals eat the plants and break the proteins back down into ______to make its own proteins.

When plants and animals die, or produce waste, the nitrogen containing compounds are returned to the ______by decomposers. Bacteria convert the amino acids back into ______, which are once again taken up by the plant.

Other bacteria called ______bacteria take the nitrates and convert it back into ______gas which is released back into the atmosphere. These bacteria are anaerobic, meaning they do not require ______and grow best where there is none. They complete the nitrogen cycle.

1.  Nitrogen gas makes up almost 79% of the atmosphere. Why then is it so difficult for living organisms to acquire nitrogen?

2.  What role do decomposers play in the nitrogen cycle?

3.  What are nitrates?

4.  Why do farmers often practice crop rotation?

5.  How do humans affect the nitrogen cycle?

Phosphorus Cycle

http://www.sumanasinc.com/webcontent/animations/content/phosphorouscycle.html

http://science.jburroughs.org/mbahe/BioA/starranimations/chapter4/videos_animations/phos_anim.html

Water quality & phosphorus runoff – Alberta tomorrow http://www.youtube.com/watch?v=7I4AN6eWp1w

http://www.youtube.com/watch?v=Vuc8WeEKi3g&feature=endscreen&NR=1

Number the following terms using the diagram:

The phosphorus cycle has two different parts: a long term cycle and a short term cycle. The long term cycle involves the formation and erosion of ______. The short term cycle involves ______and ______.

Through erosion, ______, a combination of phosphorus and oxygen, end up in the soil and water bodies. Here they can be used by ______to make DNA, and calcium phosphate for bones. Animals ______the plants thereby obtaining ______. In the marine environment, when plants and animals die, they form rock on the ocean floor. Over millions of years, this rock may come to the surface through geologic uplift. This is the ______term cycle.

The ______term cycle involves decomposers. The waste and remains of plants and animals are converted back into ______, which can again be taken up by ______.

1.  What are phosphates?

2.  How do land plants obtain phosphates?

3.  What makes this cycle different from the other 3 cycles?

4.  How do humans affect the phosphorus cycle?

5.  An ecological indicator is a variable that is measured to determine the health of a component of the ecosystem. Explain why phosphorus runoff is a good indicator of the status of the phosphorus cycle.

Biogeochemical Cycle Review:

1.  Explain what a biogeochemical cycle is.

2.  For each of the following, identify the cycle affected, and describe how it is affected.

a.  Feedlot operations

b.  Fertilizer applications

c.  Sewage disposal

d.  Vehicle and refinery emissions

e.  Acid rain

3.  How is water quality affected by the following:

a.  Oil and gas industry

b.  Agricultural systems

c.  Domestic water consumption

Nitrogen Cycle

http://www.mhhe.com/biosci/genbio/tlw3/eBridge/Chp29/animations/ch29/1_nitrogen_cycle.swf

https://www.classzone.com/books/ml_science_share/vis_sim/em05_pg20_nitrogen/em05_pg20_nitrogen.swf

http://uccpbank.k12hsn.org/courses/APEnvironmentalScience/course%20files/multimedia/lesson09/animations/2b_nitrogen_cycle.html

http://bcs.whfreeman.com/thelifewire/content/chp58/5802004.html

http://extension.missouri.edu/p/WQ252

http://www.teachersdomain.org/asset/lsps07_int_nitrogen/

Water quality – Alberta tomorrow http://www.youtube.com/watch?v=7I4AN6eWp1w

Phosphorus Cycle

http://uccpbank.k12hsn.org/courses/APEnvironmentalScience/course%20files/multimedia/lesson10/animations/2b_phosphorus_cycle.html

http://www.sumanasinc.com/webcontent/animations/content/phosphorouscycle.html

http://science.jburroughs.org/mbahe/BioA/starranimations/chapter4/videos_animations/phos_anim.html

Water quality & phosphorus runoff – Alberta tomorrow http://www.youtube.com/watch?v=7I4AN6eWp1w

http://www.youtube.com/watch?v=Vuc8WeEKi3g&feature=endscreen&NR=1

Carbon Cycle

http://www.sumanasinc.com/webcontent/animations/content/globalcarboncycle.html

http://www.epa.gov/climatechange/kids/basics/today/carbon-dioxide.html

http://highered.mcgraw-hill.com/olcweb/cgi/pluginpop.cgi?it=swf::480::640::/sites/dl/free/0072879351/113987/0004.swf::Carbon Cycle

carbon storage and ghgs movie – Alberta tomorrow: http://www.youtube.com/watch?v=rtE25SiDDyc

Water Cycle

http://uccpbank.k12hsn.org/courses/APEnvironmentalScience/course%20files/multimedia/lesson07/animations/2 b_Water_Cycle.html

http://www.biology.ualberta.ca/facilities/multimedia/uploads/alberta/watercycle.html

http://www.epa.gov/safewater/kids/flash/flash_watercycle.html

water use – Alberta tomorrow: http://www.youtube.com/watch?feature=endscreen&v=5v2OUOqERwA&NR=1

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