week 3

carbon

A chemical element found in coal and diamonds and in all plants and animals.

nitrogen

A colorless, odorless gas that makes up about four-fifths of the earth’s air

Carbon dioxide- oxygen cycle

The continuous movement of carbon dioxide and oxygen between organisms

Nitrogen cycle

The continuous movement of nitrogen between organisms and their surroundings

fertilizer

Nitrogen containing substances used to make soil better for growing plants

Carbon dioxide

A gas made of carbon and oxygen atoms that plants need for photosynthesis

oxygen

A colorless gas found in the air. Humans and animals need oxygen to breathe. Oxygen makes up 21 percent

of earth’s atmosphere

respiration

The process of breathing air to get oxygen and breathing out waste gases

decompose

To rot or decay

environment

The surroundings that an organism lives in

Slide 2: http://focus.aps.org/files/focus/v22/st5/coal_diamond.jpg

Slide 3: http://www.dzsc.com/data/uploadfile/20088894856854.jpg

Slide 4: http://water.me.vccs.edu/concepts/oxcycle.jpg

Slide 5: http://www.nicksnowden.net/images/Nutrient_Cycles/nitrogen_cycle_cartoon.gif

Slide 6: http://www.lesco.com/images/roots_flat.jpg

Slide 7: http://www.bellabacchante.com/wp-content/uploads/2008/11/co2pollution.jpg

Slide 8: http://www.oxyedge-chum.com/images/oxygen_edge.jpg

Slide 9: http://www.cartage.org.lb/en/themes/Sciences/LifeScience/GeneralBiology/Physiology/RespiratorySystem/HumanRespiratory/humrespsys_1.gif

Slide 10: http://www.green-support.com/en/img/image024.jpg

Slide 11: http://www.efaw.org/images/collage_environment2.jpg