Cycles Of Nature-accordian Foldable
Cycles Of Nature-accordian Foldable
Students are to Draw and Label Water Cycle from text…on a ¼ sheet of paper…
Define transpiration and condensation
Carbon Cycle
(Handout for foldable)
Carbon is found in the atmosphere as carbon dioxide gas CO2;
Carbon is found in the oceans as dissolved carbon dioxide.
Carbon is found on land in animals, rocks & soil. Underground as coal, petroleum & calcium carbonate (chalk);
During photosynthesis plants take in CO2 and release O2;
When animals die & decompose, carbon is released into the soil.
Eventually these compounds break down & the carbon returns to the atmosphere.
During respiration, animals take in oxygen gas (O2) and give off (exhale) carbon dioxide (CO2);
NITROGEN CYCLE (handout)
All living things require nitrogen compounds (nucleic acids & proteins);
Air is 79% nitrogen (nitrogen gas) but most living organisms cannot use nitrogen in this form. Special bacteria “fix” it for plants…and then animals eat the plants…
DENITRIFICATION- converting nitrogen compounds (nitrates) into nitrogen gas;
NITROGEN FIXATION-process of converting nitrogen gas into ammonia or a useable form of nitrogen.
OXYGEN CYCLE…
The movement of oxygen between the air (atmosphere)…(0.01% of oxygen), living things (biosphere)…(0.49% oxygen) and the Earth’s crust (lithosphere)….(99.5% of Oxygen);
*Oxygen is found stored in rocks of the Earth as oxide minerals & is consumed during rock weathering processes where “oxides” (such as rust) are produced.
*Oxygen is consumed during combustion (burning);
*Oxygen is taken in by animals during respiration.
*Oxygen is given off by plants during photosynthesis.
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