Explanation: Carbon dioxide is an important heat trapping gas. It is released through human activities such as deforestation and burning fossil fuels, as well as natural processes such as volcanic eruptions and respiration.

Explanation: Decrease in land ice is one of the effects of climate change. The continent Antarctica has been losing more than 100 cubic kilometers of ice per year since the year 2002. These decreases in land ice result in the increase of sea level.

Explanation: Sea level rise is caused by the expansion of sea water. Sea water as it warms up due to sunlight it response to climate change and the widespread melting of land ice. Sea level rise consumes the coastal lands and islands.

Explanation: IPCC stands for Intergovernmental Panel on Climate Change. It reviewed the results of several experiments in order to estimate changes in climate in the course of this century. These studies shown that, the mean average temperature will rise by 1.4 to 5.8 degree Celsius.

Explanation: The global mean sea level is projected to rise by 9-88 cm by the year 2100. This cause various problems to humans as more than half of the world’s population now lives within 60 km of the sea.

Explanation: Human societies will be seriously affected by extremes in climate. Some of the climatic extremes which lead to droughts and floods will cause great damage to human society. This is also a fundamental concern for human health.

Explanation: According to World Health Organization, Ganges-Brahmaputra delta in Bangladesh is the most vulnerable region for rise in sea level among the above given options. They cause various problems for vegetations and as well as for organisms.

Explanation: Freshwater supplies may be seriously affected due to climate change. Reducing the availability of clean water for drinking leads to the death of humans and as well as animals. It leads to drought condition.

Explanation: Food production will be seriously reduced in vulnerable regions directly and also indirectly through an increase in pests and plant or animal diseases. This leads to reduce in the yield of crops and the quality of the crops also reduced.

Explanation: Food and water shortages may lead to conflicts in vulnerable regions. Due to shortage of food and water both animals and humans suffer from starvation and malnutrition with long term health consequences.

Explanation: Due to change in climate vector species like mosquitoes, will increase the spread of diseases, such as malaria, dengue etc to new areas which lack good public health infrastructure and cause problems.

Explanation: The training of researchers and health professionals is essential towards the world becoming more responsible for the expected outcome of Global Climate Change. Thus we can protect the environment.

Explanation: In 1997, the severity of periodic warming in the Pacific Ocean led to the most serious death in coral ever known. It is estimated that about 10% of the earth’s coral reefs were dead and another 30% were seriously affected.

Explanation: World Health Organization set up a task group which warned that climate change may have a serious affect on human health. Climate change will increase existing health problems and may also bring new heath problems.