Mention few harmful effects of ozone depletion.

• Ozone layer depletion causes increased UV radiation levels at the Earth's surface, which is damaging to human health.
• Negative effects include increases in certain types of skin cancers, eye cataracts and immune deficiency disorders.
• UV radiation also affects terrestrial and aquatic ecosystems, altering growth, food chains and biochemical cycles.
• Aquatic life just below the water’s surface, the basis of the food chain, is particularly adversely affected by high UV levels. .