The Atmosphere: Oxygen and Carbon Dioxide

The video explains how oxygen and carbon dioxide are cycled between plants and animals. It highlights the role of plants, especially large ones like trees, in producing oxygen through photosynthesis. Additionally, it discusses the significant contribution of microscopic oceanic organisms to the global oxygen supply.

What role do plants play in supplying oxygen to the Earth?

Explain the process of photosynthesis and its significance.

How do large plants and trees contribute to the oxygen supply?

What are the microscopic organisms in the oceans believed to do?

Describe the cycling of carbon dioxide and oxygen between plants and animals.