Environmental Impact of CO2 Emissions

The video discusses the impact of excessive CO2 emissions on the environment, particularly focusing on the oceans. It explains the chemical reactions that occur when CO2 dissolves in water, forming carbonic acid, bicarbonate, and carbonate. These reactions are crucial for marine life as they lead to the formation of calcium carbonate, essential for the development of skeletons and shells. However, the increase in CO2 levels has led to ocean acidification, which poses a threat to marine ecosystems.

What are the two main areas affected by excessive CO2 emissions?

• Urban areas and rural areas

• Forests and rivers

• Ozone layer and oceans

• Mountains and deserts

What compound is formed when CO2 reacts with water?

• Calcium carbonate

• Carbonic acid

• Sulfuric acid

• Nitric acid

Which compound is essential for the formation of marine life structures like shells and skeletons?

• Sodium bicarbonate

• Magnesium chloride

• Calcium sulfate

• Calcium carbonate

What happens to the ocean's acidity when there is an increase in CO2 levels?

• It decreases

• It fluctuates

• It remains the same

• It increases

Why are calcium stocks in the ocean insufficient with increased CO2 levels?

• There is more carbonic acid and bicarbonate ions

• Calcium is evaporating

• Calcium is being used up by marine animals

• Calcium reacts with other elements