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Carbon cleanup.


When you flip on the television, you are using electricity. Much electricity comes from power plants, where fuels--such as oil--are burned to create electricity.

The downside Downside

The dollar amount by which the market or a stock has the potential to fall.

Notes:
You might hear someone say that the downside on stock XYZ is $10. What that means is that the stock could fall by this amount if things got bad.
: Burning fossil fuels fossil fuel: see energy, sources of; fuel.
fossil fuel

Any of a class of materials of biologic origin occurring within the Earth's crust that can be used as a source of energy. Fossil fuels include coal, petroleum, and natural gas.
 produces carbon dioxide carbon dioxide, chemical compound, CO2, a colorless, odorless, tasteless gas that is about one and one-half times as dense as air under ordinary conditions of temperature and pressure. . This greenhouse gas greenhouse gas
n.
Any of the atmospheric gases that contribute to the greenhouse effect.



greenhouse gas 
 can trap heat in the atmosphere, leading to an overall warming of the planet. But trees can help to remove some of this gas. These green giants take in carbon dioxide from the air to carry out photosynthesis. In this process, plants capture energy from sunlight sunlight

the actinic rays of direct sunlight are known to have disinfectant properties, to be instrumental in the production of vitamin D in the skin and to be the trigger mechanism in photosensitive dermatitis, squamous cell carcinoma of the eye in cattle and of the vulva in sheep
 to turn carbon dioxide and water into food.

How many trees would it take to absorb the carbon dioxide that's produced when you use everyday appliances? Use the equation below to find out. Then, fill in the table and answer the questions that follow.

Equation

a. Each mature tree can remove roughly 11 kilograms (kg) of carbon dioxide a year.

b. Use this equation to calculate the number of trees needed to absorb the carbon dioxide released each year from the use of certain appliances: (kilograms of carbon dioxide released) / (11 kilograms of carbon dioxide absorbed per tree) = number of trees. HINT: Round up your answer.</p>

<pre> Average carbon Number of

dioxide released trees needed each year per

to absorb the Home household released appliance A stand-alone hardware device or software environment dedicated to a specific task. See hardware appliance and software appliance.  

(kg) carbon dioxide Television 62 Home computer 119 Refrigerator 562 Central air- conditioning 1,256 Source: U.S. Department of Energy </pre> <p>1. Which household appliances require more than 40 trees to offset the carbon dioxide that is produced from powering each?

2. The use of which home appliance would cause the most carbon dioxide to be produced? How much?

3. Suppose a household used all of the appliances on the data table. What is the total amount of carbon dioxide produced in one year from using the appliances? How many trees would it take to absorb that amount?</p>

<pre> Carbon Cleanup Average

Average carbon number of dioxide released trees needed Home each year per to absorb the appliance household released

(kg) carbon dioxide Television 62

6 Home computer 119 11 Refrigerator

562 51 Central air- conditioning 1,256

114 </pre> <p>1. refrigerator, central air-conditioning air-conditioning

Control of temperature, humidity, purity, and motion of air in an enclosed space, independent of outside conditions. In a self-contained air-conditioning unit, air is heated in a boiler unit or cooled by being blown across a refrigerant-filled coil and then
,

2. central air-conditioning, 1,256 kg

3. 1,999 kg, approximately 182 trees
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Title Annotation:MATH SKILLS
Publication:Science World
Date:Mar 27, 2006
Words:368
Previous Article:What's the weather?(GRAPH AND CHART-READING SKILLS)
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