A [[==Key Stage 4=====Meaning==='''Global warming''' is a scientific theory]] which shows observation that the [[average]] [[temperature]] of the [[Earth]] is increasing. ===About Global Warming===: '''Global warming''' happens naturally. However, scientists [[Scientific Theory|theorise]] the current trend of '''global warming''' is being caused by [[human]] activity on [[Earth]]. This theory is known as [[Anthropogenic Global Warming]].: '''Global warming''' can be caused by increased [[concentration]]s of [[Greenhouse Gas|greenhouse gases]] such as [[Carbon Dioxide]] and [[Methane]] which are being produced in larger quantities currently due to [[human]] activity.: '''Global warming''' can cause [[Habitat Destruction|habitat destruction]] due to changes in weather patterns in many different [[ecosystem]]s possibly causing drought, flooding, temperature rises or temperature falls depending on the location.