GEOLOGY

Detailed explanation-1: -Carbon dioxide is an important greenhouse gas that helps to trap heat in our atmosphere. Without it, our planet would be inhospitably cold. However, an increase in CO2 concentrations in our atmosphere is causing average global temperatures to rise, disrupting other aspects of Earth’s climate.

Detailed explanation-2: -Too much carbon dioxide in the atmosphere is not good for the planet or other living creatures. While CO2 is a natural result of life, and a vital part of the growth cycle of plants, too much of it in the atmospheric bubble that surrounds the Earth traps the heat from the sun, raising temperatures on Earth.

Detailed explanation-3: -Higher carbon-dioxide levels will be beneficial. CO2 is an essential nutrient for land-based plants. The Earth’s biosphere has also experienced a relative CO2 famine for many millennia-the recent increase in CO2 levels has thus had a measurable, positive effect on plant life.

Detailed explanation-4: -An increase in the carbon dioxide content in the atmosphere would cause more heat to be retained by the atmosphere and lead to global warming.

Detailed explanation-5: -Without carbon dioxide, Earth’s natural greenhouse effect would be too weak to keep the average global surface temperature above freezing. By adding more carbon dioxide to the atmosphere, people are supercharging the natural greenhouse effect, causing global temperature to rise.