Explain How Fluctuations in Abiotic Cycles Can Influence Populations

Explain How Fluctuations in Abiotic Cycles Can Influence Populations

Abiotic Cycles: An Introduction

Every constitute, every brute, and every living organism on earth is fabricated of materials that accept been used and re-used many times. In short, we are all made of recycled parts! Just retrieve, nitrogen atoms in the protein that makes up your pilus might have come up from an apple tree you lot ate weeks ago. That apple acquired nitrogen atoms from the soil the apple tree tree was planted in, and the nitrogen in the soil was stock-still from nitrogen gas in the air.

All the chemical elements (e.g., carbon, nitrogen, oxygen) that make upwards living cells continuously flow between living things and the nonliving environment through abiotic cycles.  The following are the well-nigh well-known abiotic cycles:

  • The carbon bicycle
  • The nitrogen cycle
  • The water cycle
  • The sulfur bicycle
  • The phosphorus bicycle
  • The rock cycle

Nosotros volition focus on two of these cycles— the carbon cycle and the nitrogen cycle. Let’s get-go have a look at the carbon cycle.

The Carbon Cycle


NASA. Keeping Up With Carbon. Retrieved from https://world wide web.youtube.com/watch?5=FgEZpX3n5mo

The Carbon Bike: A Closer Await

Directions: Review this image that shows the components of the global carbon bike. Click on each plus sign for information to help you understand all that is shown in the image. You tin can expand the image by clicking on the symbol in the upper correct.

The Carbon Wheel: Review Game

Click on the epitome beneath to play the interactiveCarbon Bicycle Game. In this game, yous will be a carbon compound moving through the carbon bicycle. Y’all can take dissimilar paths through the cycle. As you move through the carbon bicycle, read the information provided as you choose a direction. Notice that you can click on words in bluish for more information on a specific process. A “?” is your take a chance to bank check what you have learned.

The Nitrogen Cycle

Nitrogen is some other of import element to all life on earth. All organisms crave nitrogen to make amino acids, which are the building blocks of proteins. Well-nigh 78% of the Earth’southward atmosphere is made up of nitrogen gas, Ntwo, simply this form of nitrogen is not usable by most organisms. For nitrogen to be usable, it must be converted into other forms, including ammonium ions, NH4+; nitrite ions, NO2-; and nitrate ions, NO3
. The nitrogen bicycle describes how nitrogen moves betwixt these forms as it passes through plants, animals, bacteria, the atmosphere, and soil. At that place are several processes involved in the nitrogen cycle, including nitrogen fixation, ammonification, nitrification, assimilation, and denitrification.

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Directions: Watch
What is the Nitrogen Cycle?
to learn most the processes involved in the nitrogen bike.


eHow. What Is the Nitrogen Cycle? Retrieved from https://www.youtube.com/watch?v=7uLqeX42S6w&feature=youtu.be

The Nitrogen Cycle: A Closer Wait

Directions: Look at this image showing the processes involved in the nitrogen wheel. Click on each plus sign for more than information nearly each procedure. Yous can expand the image by clicking on the symbol in the upper right.

Like the carbon cycle, human activities can also influence the nitrogen bicycle. One of the major influences of humans on the nitrogen cycle occurs through the use of nitrogen-containing fertilizers. Fertilizers are used by homeowners to maintain and improve lawns and gardens and by farmers to boost crop yield. Nitrogen is oft the chief nutrient in fertilizers because of all the fertilizer nutrients. It produces the greatest growth response in plants. Fertilizers usually contain nitrogen in its nitrate form, which easily dissolves in water. Equally a consequence, backlog nitrogen from fertilizers tin can easily enter groundwater and runoff into nearby streams and lakes.

Directions: Lookout
to see what tin happen when excess nitrogen enters a lake through runoff.


FuseSchool – Global Education. Eutrophication. Retrieved from https://www.youtube.com/scout?v=6LAT1gLMPu4

The Nitrogen Cycle: Review

Journal Activeness

Explain How Fluctuations in Abiotic Cycles Can Influence Populations

Source: https://www.texasgateway.org/resource/abiotic-cycles