Climate change is now the most unpredictable threat to our planet. The climate of the earth has changed over the last century. There is stronger evidence that most of the warming observed in the last 50 years is due to human activities. Because of gas emissions, temperatures should continue to rise over the 21st century. Its impact will be severely negative on both mankind and nature. Human activities that contribute to climate change include in particular the burning of fossil fuels, agriculture, and land-use changes like deforestation. These cause emissions of carbon dioxide [CO2], the main gas responsible for climate change. And for this possibly many catastrophic changes will be inevitable. The more greenhouse gases are emitted, the higher the tendency will be for the earth to warm. It will widespread the melting of snow and ice. Serious consequences will be a rise in sea levels, which will endanger coastal areas and small islands. Therefore, only reducing emissions of greenhouse gases should reduce the risk of adverse effects. So, the whole world needs to be concerned to remove this fatal threat.
Climate change has come to an alarming state now. This is caused by the environmental population. Every day a huge amount of carbon dioxide and other toxic gases are produced by burning a great amount of fossil fuel. These gases retain the heat coming to Earth from the sun and thereby increase the world temperature. As a result, the polar ice caps are melting day by day and the sea level is rising. The ozone layer is decaying and thereby harmful ultraviolet ray is coming to this earth. Consequently, people are becoming the victims of fatal diseases. So, many low-lying countries are at the risk of being flooded. Different types of natural disasters are occurring frequently. And the consequences of this disaster on Earth are serious. Coastal areas are losing fertility and cultivable land is becoming salty and barren. Many wild species have already been extinct and some are faced with the threat of being extinct. So, it is high time we undertook preventive measures to save this beautiful earth.