When the level of the sea rises, it covers the plants and causes some of them to die. When they die, animals lose their main source of food. We, human beings lose our two sources of food, plants and animals. It may also force people to lose their homes. In other words, the whole chain will get affected if nothing is done on time to stop global warming from spreading it’s wings. - See more at: http://www.conserve-energy-future.com/GlobalWarmingCauses.php#sthash.8Fp1K5dW.dpuf