Climate change is a change in Earth’s overall climate, which means a change in Earth’s average temperature or in its precipitation patterns. Climate change has become one of the most serious environmental problems faced in the 21st century threatening public health and food security.

Average temperature has risen a little more than one degree Fahrenheit during the past 100 years or so. However, a small changes in Earth’s average temperature can lead to big impacts. The Earth is currently facing the impact of climate change. The melting of ice, the rise of sea level, the extreme weather, drought, massive floods, the changing of rainfall patterns and growing seasons are the impacts of climate change.