Is global warming caused by humans or is it caused naturally?

Answer 1

There is a natural greenhouse effect that keeps the planet warm. But that is not causing global warming. It is the enhanced greenhouse effect, caused by man, that is causing global warming.

Carbon dioxide is a naturally occurring greenhouse gas. At normal concentrations, it, along with other greenhouse gases, helps maintain global temperatures at a level that is comfortable for humans and other animals that have adapted to the present climate. This carbon cycle is the natural part of global warming.

By adding new carbon dioxide to the atmosphere, which we do by burning fossil fuels such as coal, oil and natural gas, and by cement manufacture, we interfere with the natural carbon cycle and create enhanced global warming. Throughout human history until the Industrial Age, atmospheric carbon dioxide levels were in the range 260-280 parts per million (ppm) and never higher than this. The increase in concentrations of carbon dioxide to the present level of over 400 ppm is accepted by research scientists as principally the result of human activity and so the resultant enhanced global warming is caused by human activity.

We have also destroyed huge forests all over the world (deforestation) that used to remove carbon dioxide from the atmosphere.

Answer 2

It is caused by humans burning fossil fuel (coal, oil and natural gas) and cutting down forests. Both of these mean more carbon dioxide in the greenhouse gases in the atmosphere. The extra carbon dioxide is causing global warming, which is causing climate change.

Answer 3

Both ! The Earth is still coming out of the last ice-age, which means temperatures will naturally rise over a lengthy period pf time. HOWEVER - since the industrial revolution, humans have been pouring tonnes of waste materials into the atmosphere - and it's only (relatively) recently that society has realised the damage that's been caused.

Answer 4

The overwhelming consensus among scientists is that global warming is primarily caused by human activities, particularly the burning of fossil fuels and deforestation. While natural factors like volcanic eruptions and changes in solar radiation can also influence the Earth's climate, their impact is relatively small compared to the influence of human activities.

Answer 5

Most climate scientists (that is, about 97% of them) accept that global warming is being caused by the human activities of deforestation and burning fossil fuels (coal, oil and natural gas).

Answer 6

humans are the majority of the cause...and we're not exactly doing that great in terms of stopping it either...

Answer 7

Humans cause golbal warming