What are the most dangerous greenhouse gases?

Answer 1

Although commonly labeled the "worst greenhouse gas," carbon dioxide is not the most effective greenhouse gas. However, because it has the highest concentration in the atmosphere compared to all the other greenhouse gases that human emit (except water vapor), it is the one that has the biggest impact.

However, on a "per molecule" basis, many other molecules are more effective greenhouse gases. The top greenhouse gas, as reported by the Envirommental Protection Agency, is methane. This silent odorless gas is 21 times more effective in trapping in heat in the atmosphere. In recent studies reported by the EPA, one of the leading contributors of methane into the environment was natural animal emissions; raising the question of whether or not global warming is man-made problem. Other greenhouse gases include CFC's, SF6, and N2O and H2O.

Nitrous oxide is 310 times more powerful than carbon dioxide in trapping the heat.

Carbon Dioxide is the most dangerous greenhouse gas.

Well, the one that causes most global warming is actually water vapor, but we can't do anything about that. That has stayed constant for thousands of years. The ones we can do something about are:

1. Carbon dioxide (causes up to 26% of greenhouse warming)
2. Methane (up to 9%)
3. Ozone (up to 7%)

Methane is 20 times more powerful than carbon dioxide, but there is not so much of it, so probably carbon dioxide is the most dangerous.

Answer 2

They make a transparent cover over earths atmosphere and when the sun rays enter to the earth atmosphere this transparent shield did not allow them to go back and so earth become warmer and warmes which increase earths temprature and due to this weather disturbance and other problems occur which are generall kwnon as global warming

Answer 3

Greenhouse gases aren't bad at all. In fact, without them the earth would be frozen completely. However, TOO much greenhouse gases ARE bad because they contribute to what we call "Global Warming". That's because if there's too much greenhouse gases, too much heat is trapped on earth and can't escape into space therefore melting ice caps and resulting in floods. In a few years' time, some islands like Maldives and others will be drowned and a lot of cities will be flooded.

Green house gases are not necessarily bad. If you removed all greenhouse gases from the Earth's atmosphere most plant life would die off within a couple of days, animals would likely not survive long enough to be killed by the ice age that would result.

The problem is with an excess of greenhouse gases, particularly carbon dioxide or CO2 which are responsible for global warming.

Increasing the average temperature of the Earth causes problems in a number of areas. The three largest problems that I am aware of are:

1. The melting of the polar ice caps will raise sea levels, flooding a considerable amount of land that is currently inhabited.

2. An increase in the average surface temperature of the ocean results in an increase in both the number and strength of tropical storms and hurricanes, which can be quite destructive.

3. Changing global weather patterns can seriously interfere with farming, which may lead to mass starvation.

Answer 4

Carbon dioxide (CO2) is the largest anthropogenic (man-made) greenhouse gas, and the worst.

The carbon cycle moves carbon in and out of the atmosphere, the oceans, the forests, the soil, and even from animals and humans. This is a natural process.

However, humans have been seriously releasing CO2 into the atmosphere since the beginning of the Industrial Age, when we began burning fossil fuels (coal, oil and natural gas). The carbon in fossil fuels has been safely stored away for millions of years, but the sudden release of it all is proving too much for the earth's carbon cycle to cope with.

Too much of it is staying in the atmosphere and capturing the sun's heat, leading to an accelerated greenhouse effect, a warming of the planet, and to climate change.

Answer 5

Nature is the primary emitter of all greenhouse gases, making up about 99.7% of the total emission. Much of this is water vapor. Decaying matter emits about 97% of all carbon dioxide emitted. Man produces about 4% of the total carbon dioxide emitted.

Of this 3%, almost half is created in the generation of electric power or for heating of our buildings. The rest is generated through the use of automobiles.

Answer 6

Greenhouse gases such as methane, water vapor, and carbon dioxide are not directly harmful to living organisms, as their concentrations remain too low for that.

The harm is instead indirect, in that these gases trap heat, thus raising earth's temperature which results in what is essentially a permanent change to the climate. Species slow to adapt or migrate are more likely to face extinction under such circumstances.

Throughout all of human existence CO2 levels have never changed anywhere close to 1% per century, up until 1700. Between 1700 and 1900 CO2 levels climbed about 1.5% per century. Today they are increasing over 30% per century, and we expect the levels to increase over 50% per century by 2050. Change of this magnitude is quite dramatic on any global, geologic scale. The last time our climate changed this fast was apparently the result of a massive asteroid strike which ultimately resulted in the extinction of the dinosaurs and many other species of earth's biota.

Answer 7

The most dangerous greenhouse gases are methane and nitrous oxide, along with fluorinated gases. These gases have significantly higher heat-trapping ability compared to carbon dioxide, contributing to global warming and climate change.

Answer 8

1. Carbon dioxide, because there is so much of it.
   
2. Methane, because it is 21 times more powerful than carbon dioxide.