Essays Tagged: "Carbon dioxide"

Global Warming

me scientist's have been concerned since 1896 about what might happen if therewere 5.5 billion tons carbon dioxide in our atmosphere. In 1961 a British scientist did anexperiment showing that the carb ... ward a Swedish scientist, Suante Arrhenius, found out if the radiation of the sun wastrapped in the carbon dioxide the temperature of the earth would increase by 1-2 degrees.In 1988 James Hanson, a re ...

(9 pages) 663 0 4.6 Jan/1996

Subjects: Science Essays > Environmental Science

The Nuclear Power Debate

tricity produced from Uranium. The use of nuclear power opposed to burning fossil fuels has reduced carbon dioxide emissions by 2 billion tonnes per year, minimising the global warming effect on the a ... ntury if fossil fuels continue to be used, even at present global levels. The Panel claims that for carbon dioxide to be stabilised to safe levels, a 50-80% reduction in all emissions would be require ...

(3 pages) 210 0 4.3 Jan/1996

Subjects: Science Essays > Physics

stomata distribution in a dicot leaf

they are controlled by guard cells which control the opening and closing of stomata. Stomata allow carbon dioxide to enter the plant, and allow water and excess oxygen to escape. About 90% of water i ... e factors are:(1) Light ? stomata are open in light and closed in dark.(2) Photosynthesis ? when in carbon dioxide free air stomata open even in the dark. Increase in carbon dioxide concentration stom ...

(4 pages) 34 0 4.2 Apr/2002

Subjects: Science Essays > Biology > Plant Biology

The Heart, It's Diseases, and Functions

rior are the biggest veins in the body.The Superior is really the biggest. These veins have a lot ofcarbon dioxide and have oxygen-poor blood. The aorta is the biggestartery in the whole body. Which w ... bers of the heart. The right atrium receives blood from the veinswhich is low in oxygen and high in carbon dioxide; this blood is thentransferred to the right lower chamber, or right ventricle, and is ...

(6 pages) 176 0 3.7 Feb/1997

Subjects: Humanities Essays > Health & Medicine

Photosyntesis

is also produced. Photosynthesis is 'a process in which green plants synthesize carbohydrates from carbon dioxide and water....The reverse of this reaction provides energy for plants, for animals tha ... from photosynthesis. The presence of light and of the green pigment chlorophyll makes the change of carbon dioxide and water to glucose and oxygen possible. It was Jan Ingenhouz with Jean Senebier in ...

(3 pages) 107 1 2.8 May/1996

Subjects: Science Essays > Biology > Plant Biology

Global Warming. 5 pages. Causes, effects, and possible solutions, such as: the kyoto treaty, "sinks", and hemp.

fuels burned to heat homes and businesses, run cars, and power factories are responsible for 98% of carbon dioxide, 24% of methane, and 18% of nitrous oxide. That shows how much of the greenhouse gase ... twelve others (97). Today all sorts of hazardous gases are being pumped into the atmosphere such as carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, purfleurocarbons, and sulfur hexofluorid ...

(4 pages) 352 0 4.3 May/2002

Subjects: Science Essays > Earth Sciences

The Greenhouse Effect

tailed essay Good workThe Greenhouse EffectThe greenhouse effect occurs when gases such as methane, carbon dioxide,nitrogen oxide and CFCs trap heat in the atmosphere by acting as a pane ofglass in a ... which could alter our way ofliving.The main gases that cause the greenhouse effect are water vapor, carbondioxide (CO2), and methane which comes mainly from animal manure.Other gases like nitrogen oxi ...

(4 pages) 95 0 4.0 Feb/1997

Subjects: Science Essays > Environmental Science

Ozone layer

In environmental science the green house effect is a common term for the role water vapor; carbon dioxide and ozone play in keeping the earth's surface warmer than it would normally be. The a ... eing much cooler than the sun, remits radiation most strongly at infrared wavelengths. Water vapor, carbon dioxide and ozone then absorb much of this radiation and remit a large proportion back toward ...

(6 pages) 93 0 3.5 Mar/1995

Subjects: Science Essays > Environmental Science

Greenhouse Effect

none very good reportThe Greenhouse EffectThe greenhouse effect occurs when gases such as methane, carbon dioxide,nitrogen oxide and CFCs trap heat in the atmosphere by acting as a pane ofglass in a ... which could alter our way ofliving.The main gases that cause the greenhouse effect are water vapor, carbondioxide (CO2), and methane which comes mainly from animal manure.Other gases like nitrogen oxi ...

(4 pages) 81 0 3.5 Sep/1996

Subjects: Science Essays > Environmental Science

"Could the Greenhouse Effect Cause More Damage?"

see as the coming apocalypse. (global warming) 'By 2050, if wedecide to load trace gasses - mainly carbon dioxide - into the atmosphereat our current rate, we can expect Earth's temperature to increa ...

(2 pages) 73 0 3.8 Jan/1996

Subjects: Science Essays > Environmental Science

CFC'S detroy the Ozone

de up of many different gases, 78% nitrogen, 21% oxygen, and 1% of a dozen or more other gases like carbon dioxide, helium, and ozone.This atmosphere extends many miles out from the earth's surface. H ... ects life on earth from the dangerous and even deadly UV rays. Cfcs affect this process.Chloroflourocarbons (Cfcs) are man-made chemicals that were invented in 1928. However, they were not used on a l ...

(9 pages) 72 0 3.8 Jan/1996

Subjects: Science Essays > Environmental Science

Evaluating an enthalpy change that can not be measured directly

ng An Enthalpy Change That CannotBe Measured Directly.Introduction.We were told that sodium hydrogencarbonate decomposes on heating to give sodiumcarbonate, water and carbon dioxide as shown in the eq ... can be found using the enthalpychanges from two other reactions. These being that of sodium hydrogencarbonate andhydrochloric acid and also sodium carbonate and hydrochloric acid.We were given a list ...

(2 pages) 49 0 3.9 Jan/1996

Subjects: Science Essays > Chemistry

photoshynthesis

mical energy.Dark reactions (don't require light)use chemical energy from light reaction to convert carbon dioxide into glucose.Where does photosynthesis take place?Structure of a ChloroplastChlorophy ... ken down and energy is formed in a three step process.GlycolysisGlucose broken down to form 2 three carbon moleculesKreb's Cyclethree carbon molecules are broken down to 3 carbon dioxide moleculesElec ...

(2 pages) 68 1 4.5 Jan/1997

Subjects: Science Essays > Biology > Plant Biology

To investigate the factors that affect a chemical reaction: Calcium Carbonate + Hydrochloric Acid Calcium Chloride + Carbon Dioxide

PlanI have to investigate the factors that affect a chemical reaction:Calcium Carbonate + Hydrochloric AcidCalcium Chloride + Carbon DioxideThe easiest way to determine a change ... dCalcium Chloride + Carbon DioxideThe easiest way to determine a change in the reaction is how much carbon dioxide is given off during the reaction.The variables that affect this reaction are:稴 ... sed to decrease the temperature of the water. The Gas Syringe will be used to measure the amount of Carbon Dioxide hat is produced..I Predict that the higher the temperature will be, the more vigorous ...

(7 pages) 78 0 3.0 Nov/2002

Subjects: Science Essays > Chemistry

Investigation: what conditions affect water loss from leaves?

e water coming up through the roots so that no water is lost through the leaves. This means that no Carbon Dioxide is getting in which therefore stops photosynthesis. The rate of transpiration is affe ...

(3 pages) 40 0 4.2 Nov/2002

Subjects: Science Essays > Biology

Global Warming

med by a blanket of gasses (This is called the "greenhouse effect."). The gases--water vapor (H2O), carbon dioxide (CO2), and methane (CH4)--keep ground temperatures at a global average of about 15 de ... atural feedbacks, lowering temperatures.8In fact, a great deal remains unknown about the cycling of carbon through the environment, and in particular about the role of oceans in this atmospheric carbo ...

(3 pages) 113 0 3.0 Feb/1996

Subjects: Science Essays > Environmental Science

It is called Global Hoax? A realistic view of global warming.

ered the chemical composition of the atmosphere through the buildup of greenhouse gases ? primarily carbon dioxide, methane, and nitrous oxide? Or has the environment itself been the cause and the env ... nmental Protection Agency), the United States produces approximately 6.6 tons (almost 15,000 pounds carbon equivalent) of greenhouse gasses per person every year. And emissions per person have increas ...

(3 pages) 173 1 3.8 Nov/2002

Subjects: Science Essays > Environmental Science

Enhanced greenhouse effect on global warming.

al composition of the atmosphere through the buildup of greenhouse gases. Those gases are primarily carbon dioxide, methane, and nitrous oxide. The heat trapping property of these gases is undisputed. ... hile others result from human activities. Naturally occurring greenhouse gases include water vapor, carbon dioxide, methane, nitrous oxide, and ozone. Certain human activities, however, add to the lev ...

(3 pages) 183 0 2.7 Nov/2002

Subjects: Science Essays > Environmental Science

Is the Kyoto Accord Constitutional

the greenhouse gas emissions that cause climate to change. These greenhouse gases include primarily carbon dioxide, methane and nitrous oxide. The accord calls upon the industrial nations to reduce th ... the Kyoto Accord, will be the Province of Alberta. Currently they are highest per capita emitter of carbon dioxide in Canada and the second highest emitter of carbon dioxide with twenty-seven percent ...

(13 pages) 164 0 4.3 Dec/2002

Subjects: Law & Government Essays > Law > Cases

Science research paper on Deforestation.

industrial developers and much more.Forests are very important to the environment because they use carbon dioxide (CO2) and produce oxygen. They also provide food and a home for many different types ...

(5 pages) 243 1 5.0 Dec/2002

Subjects: Science Essays > Earth Sciences