Global Warming Causes

There are many causes of global warming caused by humans. The main cause is petrol industries, many of the countries which have petrol produce millions of barrels and the factories which produce it cause smoke in the air and we have air pollution. The second cause is there are not enough forests to absorb the extra carbon dioxide in the air; for example, many countries cut off the trees to build new buildings or factories and they don’t care about global warming and this increases the carbon dioxide and greenhouse gases in the atmosphere. After that there is the increasing of manufacturing. All the manufacturers companies like cars, planes, trains and ships produce gases like methane, nitrous and halo carbon. However, these gases affect the ozone layer and increase the earth’s temperature.