Why is there global warming?

Question

Why is there global warming?

Answer 1

The atmospheric concentrations of carbon dioxide (CO2) and methane (CH4) have increased. Adding CO2 or methane to Earth's atmosphere increases the greenhouse effect.The Greenhouse effect is the process in which green house gases, like carbon dioxide in the Earth's atmosphere, cause thermal radiation emitted by the Earth's surface to be reflected back down, therefore causing the climate to warm.

Answer 2

It's just a name scientists have come up with.  

If you really look at the evolution of Earth; the planet is billions of years old, always changing and always will be changing.  We can't do anything to stop the changes.  What will happen will happen whether we're living on this planet or not.  It will continue to change even after civilation is gone. So, why worry about it............................

Answer 3

Don't listen to Redcandy. He couldn't be more wrong.

Ozone hole = CFCs

Global warming = CO2 + CH4 (methane) + H2O + SO2 + others

Answer 4

Because our ozone(which is a protective layer on the earth that keeps too much sun rays coming in) has holes in it.  By having so much pollution, it destroys the ozone that we have.  Therefore, the sun rays go through the holes of the ozone, making it hotter here on earth.

Answer 5

Because Al Gore needs an issue.  Ask Al, if he is so concerned about Global Warming, why does he have Mansions that use more electricity in a month than most big houses use in a year.  Why does he drive caravans of SUV's, and fly private jets every where if he is so convinced that these very activities are destroying our environment?

Answer 6

one hundred years ago people lived like animals

in the woods with no electriaisty or  running water

Answer 7

Global warming is a very complex collection of many effects

this text only covers some aspects of global warming ,mainly agriculture i.e.effects of deforestation and subsequent man made desertification

water and air polution such as caused by

industrial contamination ,the contaminating effects of the cities(the internal combustion engine) ,are other stories,

and all of these are also man made ,such as the high industrial chimneys pumping contamination into the clouds and the burning of tires,some of this polution has been found in the ice in the polar regions

there are natural cycles in the planets life

but a lot is influenced by mans existance ,and this is increasing with overpopulation,putting strains on Natural resources and increasing contaminations as well as destructions of essential componants the ensure living conditions for all life forms

climate change is caused in great parts by desertification ,and most desertification is caused by man

the thinner ozone layer helps to speed this up.and this is caused mainly by air polution ,also as a result of mans actions

DEFORESTATION

in the past

the Building of the Spanish Armada deforrested Spain

the Phoenician trading fleet turned Lebanon in a dessert

Ganges Khan put everything to the sword and torch, then filled the wells with sand,

the sun finished of the job and whole countries turned to wastelands.

Today ,

Slash and burn destroys the protective vegetation (which helps to form the soil ),

leaving it open to the Sun ,and then ,wind and, water erosion.

The Plough turns the soil ,killing micro-biotic life (essential to soil building) and accelerates the drying out .

Pressures of the :vehicles, cattle and rain impact brings the salt to the surface.

Mono cultures ,aided by chemicals Exhaust and pollutes the soil .

Adding to this the effects of overgrazing has resulted in large scale desertification.

and there is less and less water (because of deforestation),to irrigate this production ,Farmers

are overpumping deep carbon aquifiers

and plowing more and more unstable lands going into the jungles and onto mountain slopes

expanding populations and expanding farming ,that has to keep pace with the expanding populations are very strong forces that encroach upon the rainforest's

clearing them for farming and settlement areas .

Rainforest's always are in third world countries and always in third world countries corruption and the need for money s highest

in North Africa,India,Mexico ,millions of people are effected by land loss and desertification and some have died as a result

,the Sahara is growing by 7 kilometers a year

and most of the desserts we know are a results of mans actions ,and they are increasing ,not getting less ,in the dinosaurs days ,there were no desserts.

collectively this planet is drying up ,

each degree rise in temperature means 10%crop loss

and there is less and less water (because of deforestation),to irrigate this production ,

and there are less and less farmers to do it..

Arable lands and their farms are lost all over the globe. Many farmers sons abandon farming and head for the cities.

Northern China is drying up, what once were millions of food producing people, are now hungry refugees ,running for their lives from the all consuming dust storms.

This will have a great effect on world food prices when they start buying at what ever cost, to feed their people.

Africa and Asia are loosing millions of people to AIDS , many of whom were food producers.

The farmers that are left have to feed some 70 million more people than the year before but with less topsoil.

Over the last half century,

Population growth & rising incomes have tripled world grain demand from 640 million tons to 1,855 million

In the near future the global farming community will not be able to feed every body ,food prices will continue to rise. .

RISING SEAS

The northpole is melting ,and we will know it without ice in our life times.

this does not affect the sea level because it is ice that is already in the water.but the melting ice from Green land and the south pole ,are another matter

Global warming could be slowed down to some extent,but it will mean global co operation between all countries ,and taking into account human nature and the world politics ,it is unlikely that this will happen,

At least not untill we are all in the middle of planetary disastres and it becomes a battle for the survival of humanity every where,instead of just some third world countries Source(s) here are a 100 ways to help

http://www.eco-gaia.net/forum-pt/index.p...

http://www.greenpeace.org/international/...

http://news.bbc.co.uk/2/hi/science/natur...

Answer 8

Normally sun shines on the earth and some of it is absorbed but a lot of it is reflected away.

The carbon dioxide and other pollutants that we have put into the air are making the atmosphere so blocked up that once sun enters it can not be reflected back out. Global warming!