How To Reduce Carbon Dioxide In The Air

The video discusses the increase in atmospheric carbon dioxide due to fossil fuel use, leading to climate change. It explores two methods to reduce carbon dioxide: enhancing plant growth and carbon capture. Plants capture carbon dioxide through photosynthesis, but the carbon is often recycled back into the atmosphere. Iron fertilization in oceans can boost algae growth, capturing carbon, but half of it is recycled. Carbon capture involves storing carbon dioxide in old gas wells, but challenges include separating it from other exhaust gases. Solutions focus on capturing carbon from large engines and considering energy costs.

What is the primary cause of the increased carbon dioxide concentration in the atmosphere over the past century?

• Deforestation

• Use of fossil fuels

• Volcanic eruptions

• Increased solar activity

Why is iron important for the growth of algae in oceans?

• It helps in photosynthesis

• It provides energy for algae growth

• It is a major component of algae's cell walls

• It is needed in small amounts for algae to build their bodies

What happens to the carbon captured by algae that is not eaten by sea creatures?

• It sinks to the ocean floor and is captured

• It is released back into the atmosphere

• It is stored in the bodies of sea creatures

• It is converted into oxygen

What is a major challenge in capturing carbon dioxide from car exhausts?

• The high cost of carbon capture technology

• The difficulty in collecting gases from moving vehicles

• The lack of storage facilities for carbon dioxide

• The inability to separate carbon dioxide from nitrogen

What is a potential downside of capturing carbon dioxide from power stations?

• It requires a significant amount of energy

• It increases the carbon footprint of power stations

• It is not effective in reducing carbon emissions

• It leads to the production of harmful byproducts