Complete your journal this week on the the lesson in study island titled Resources and Environmental Quality.  Remember to refer to the Journal Rubric for this assignment.  Post your journal in the comments section of this blog.  First name and last initial only.

OH Grade 7, Science Standard Earth and Space Sciences 2
Explain that Earth's capacity to absorb and recycle materials naturally (e.g., smoke, smog and sewage) can change the environmental quality depending on the length of time involved (e.g. global warming).
Reno S
9/8/2011

this weeks lesson i learned that Earth is a unique planet because of the presence of water. Everything depends on water and it's cycles. Almost two-thirds of the human body is made of water which helps our bodies reproduce blood and cells and help organs survive. we use water for crops, irrigation, that require trillions of gallons of water each year. I also learned that the Earth's atmosphere naturally contains some greenhouse gases, and These gases help to insulate the Earth, that helps decreases the amount of heat energy that escapes into space.Changes caused by humans can upset the balance in an ecosystem. The green house affect,water cycle,Nitrogen Cycle, and Food Webs help
absorb and recycle materials naturally without harming or polluting our ecosystem.

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Dakotas S.
9/11/2011

This weeks Science lesson i learned about global warming, sewage,smog,and water.I learned that Earth has only 3% water on it and the rest is Saline water.Also,that we have systems that recycle and reuse our sewage and cleaning water, etc.

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kaytlynt
9/12/2011

In science for the subject Resources & Environmental Quality I learned:
Is that there are man made leaves at the sides of lakes to prevent floods.
And did you know thatt smog helps reduce global warming.
And the most significant non-point source of air pollution is automobiles and that is what I learnd in science the subject Resources & Environmental Quality

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Sierra J
9/13/2011

Resources and Environmental Quality
What I learned in this science lesson this week is that there is two types of water pollution: point source and non-point source. Point source pollution occurs when harmful substances are added directly into a body of water. Non-point source pollution happens when polluted water is added indirectly and can not be tracked back to a single source. I also learned about the nitrogen cycle which is when human-made fertilizers are produced by using nitrogen from the atmosphere, and then the nitrogen is converted into nitrates. Another thing I found out while doing this lesson is when to many members are near the bottom of the food pyramid are killed, larger animals dont have enough food, therefore populations decline.

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Miguel.A
9/19/2011

i learned that Earth is a unique planet because of the presence of water.Water is importent to the earth because we drink stuff that has at least 2 or 1% water cool aid,pop,and juice the at least have 1% of water inh it and us peaples have water in us so i guess water very importent.

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Autumn.S
9/19/2011

This week I learned that Earth is a unique planet because of the presence of water.I also learned that nitrogen cycle which is when human-made fertilizers are produced by using nitrogen from the atmosphere, and then the nitrogen is converted into nitrates.I learned alot more like that the Earth's atmosphere naturally contains some greenhouse gases, and these gases help to insulate the Earth, that helps decreases the amount of heat energy that escapes into space. I learned alot more also.

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Wesley.G.
9/27/2011

This week I learned that Earth is a unique planet because of the presence of water.Water is absolutely essential to support life on Earth. Plants, animals and humans all rely on water for survival. Ninety-seven percent of Earth’s water is salt water and is “stored” in the oceans. Fresh water represents only three percent of Earth’s total water supply. Of that three percent, 68.7% is stored in icecaps and glaciers, 30.1% is found in ground water, and only 0.3% is found in surface water such as rivers, swamps or lakes.

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