What causes the problem of global climate change?

Answer 1

Carbon emissions have greatly increased over the past 200 years, as humanity discovered coal and factories and motor vehicles. Human population has also increased from one billion to almost six billion, and all these people want to live with refrigerators, televisions and motor vehicles with air conditioning. This puts tremendous pressure on governments all over the world to provide more and more electricity. Most electricity is produced by burning coal and other fossil fuels.

The other cause is the destruction of the forests, which can no longer keep up with the amount of carbon in the atmosphere.

The greenhouse effect is when the gases like water vapor, carbon dioxide, methane, ozone and other gases build up in the atmosphere and absorb that heat that used to be reflected out into space.

Answer 2

The cause of the environmental crisis that is global warming is man's burning of fossil fuels (coal, oil and natural gas) and destruction of forests all over the world (deforestation). The burning of fossil fuels in industry, transport and the generation of electricity releases carbon dioxide (CO2) which is building up in the atmosphere and warming the earth.

The effect of this global warming is climate change. Extra heat in the atmosphere equals extra energy, and this is melting Arctic ice and glaciers, warming and expanding oceans and giving extra strength to weather events like storms, floods and blizzards.
An environmental crisis may be caused by pollution or other human activities like deforestation. Its effect is that resources may be dilapidated and life endangered.

Answer 3

No one wants to admit to it, but every environmental problem can be tied back to over population. Too many people for the resources available. The solution, reduce the population. If we don't, mother nature will do it for us.

Answer 4

The greenhouse effect is a natural phenomenon, as long as naturally occurring greenhouse gases remain in at their long term average concentrations in the atmosphere. It is this effect that keeps the world at a comforable temperature, suitable for human existence.

The enhanced greenhouse effect occurs because of human activities such as burning coal, oil and natural gas, as well as deforestation and cement manufacture. Because of these activities, the concentration of carbon dioxide, an important greenhouse gas, has increased by over 35 per cent since pre-industrial times, from the long-term reange of 260-280 parts per million (ppm) to the present level of over 380 ppm.

Climate scientists say that it is the enhanced greenhouse effect that is causing the present alarming rate of global warming.

Answer 5

Earth's climate has changed numerous times in ages past. One fascinating, fairly recent example was known as the Azolla Event, as a freshwater arctic fern sequestered gigatons of atmospheric carbon onto the ocean floor. This drop in greenhouse gas plunged earth into an ice age.

Currently scientists estimate as much as 5% of current global climate change is due to natural varying conditions. Sometimes it is a little bit warmer, sometimes cooler. That's just weather cycles. The remaining 95%+ they have pretty well determined is due to industrious humans liberating 30 billion tons of CO2 into the atmosphere each year. This rate of change is unprecedented in our reconstructions of past CO2 levels.

Answer 6

The main cause of the global food crisis is the cost of food. Food shortages, and high demands for food drive up the cost. People cannot afford to buy food, therefore they go hungry.

Answer 7

Yes, global warming is a global environmental crisis. If we don't take serious action now it may soon be too late to do much about it.