Describe the potential effects of the increased levels of greenhouse gases like carbon dioxide and methane.

Increased greenhouse gas concentrations trap more heat in the Earth’s atmosphere, causing the average temperature on Earth to increase. This phenomenon is known as global warming. Global warming can result in more extreme weather events and the melting of polar ice.

1. Melting of ice caps and glaciers
The rising temperatures can cause ice caps and glaciers to melt, resulting in rising sea levels and increased flooding in low-lying coastal regions.

2. Extreme weather events
The rising temperatures can cause changes in precipitation patterns, resulting in more intense and frequent rainfall in some regions and more frequent and severe droughts in other regions. There will be more frequent and intense heat waves, droughts and extreme weather events like hurricanes and floods.