Climate change is any significant long-term change in the expected patterns of average weather of a region (or the whole Earth) over a significant period of time. Climate change is about abnormal variations to the climate, and the effects of these variations on other parts of the Earth.

Causes:

• Strength of the sun
• Changes in the Earth’s orbit
• Changes in the orientation of the Earth’s axis of rotation
• Carbon dioxide content of the oceans
• Plate tectonics and volcanic eruptions
• Ocean currents
• Vegetation coverage on the land
• Meteorite impacts
• Human Impact on Global Climate Change