What is global warming and what are some causes of it?

Answer 1

Global Warming is caused by the actions of humans:

• During the past 250 years we have been burning more and more fossil fuels (coal, oil and natural gas). This is releasing extra carbon dioxide into the atmosphere.
• We have also been cutting down many of the rainforests and other forests that absorb carbon dioxide.
• This means that extra carbon dioxide (and other greenhouse gases, like methane) are continually being added to the atmosphere.
• These extra greenhouse gases are holding back more and more of the sun's heat in the atmosphere and causing global warming - the warming all over the earth. And this is causing climate change.

Possible effects of global warming include:

• drought,
• violent and severe storms,
• frequent flooding due to polar ice meltdown,
• loss of organisms natural habitats,
• torrential/heavy rainfall,
• rapid spread of disease,
• competition for survival between animals and human,
• water pollution and decrease in ocean salinity,
• new species invasion,
• migration,
• increased species diversity, and
• triggering of natural and man-made disasters.

Answer 2

Global warming is the general tendency of the planet to heat up. The planet undergoes periodic episodes of climate change as part of long term natural cycles. However, recent warming is NOT natural, and is instead driven primarily by human activities such as the oxidation of fossil carbon. Burning coal and oil released 30 billion tons of greenhouse gas into the atmosphere each year.

Deforestation for agriculture also releases carbon sequestered in rain forests.

Answer 3

It's a mix of random weather. Mainly cow farts and litter are problems because of the gases they contain!

Answer 4

Global warming is caused by the enhanced greenhouse effect.