1) the increase in green house effect ! 2) the increase in the use of extensive use of fossils fuel ! 3) ozone depletion 4) deforestation 5) Plankton boom due to warming seas.
effects :
1)sea level increases 2) earth becomes more warmer and more colder 3) melting of ice and glacier 4) extinction of many animals 5) growth in diseases
prevention:
1) do not use fossils fuel 2) use of renewable energy 3) factories must eject suitable gases 4) afforestation 5) turn green and reduce wastes !