The Ozone Layer: Earth's Natural Sunscreen Under Threat

The video discusses the impact of human activities on the atmosphere, focusing on smog, acid rain, and the ozone layer. It explains how the ozone layer, a natural form of oxygen, protects Earth from harmful UV rays. The video highlights the damage caused by chlorofluorocarbons (CFCs), which create holes in the ozone layer, allowing UV rays to harm ecosystems, plankton, and plant growth. The video concludes with a review and questions to reinforce learning.

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