The global warming is a phenomena in which the increase in the abundance of greenhouse gases like carbon dioxide, methane, water vapor, nitrous oxides and ozone results in the rise in the average temperature due to the fact that these gases trap heat from sunlight. This affects the change in the climatic condition of a region. This entire phenomena is called as greenhouse effect. This results in the melting of glaciers, acidification of oceanic water and other problems.
The positive effects of global warming includes increase in carbon dioxide gas will increase the rate of photosynthesis which may lead to increase in productivity of crops, and increase in planktonic biomass in ocean.
