The ozone layer is critically important because it absorbs 97% to 99% of the sun's incoming ultraviolet (UV-B) radiation. This absorption protects life on Earth by preventing harmful UV-B rays from reaching the surface, which can damage DNA and increase the risks of skin cancer, cataracts, and harm to plants and marine life. Without the ozone layer, life would be exposed to dangerously high levels of UV radiation, leading to severe biological and ecological consequences.
Why the Ozone Layer Matters
- It acts as a protective shield in the stratosphere, specifically absorbing damaging UV-B rays from the sun.
- This protection helps reduce health risks like skin cancer and cataracts in humans.
- It also safeguards plant life and marine ecosystems from UV damage.
- The ozone layer plays a role in maintaining Earth's climate stability by influencing the temperature structure of the stratosphere and atmospheric circulation patterns.
Summary
In essence, the ozone layer is vital for sustaining life on Earth by filtering out harmful ultraviolet radiation, thereby protecting DNA integrity and supporting ecological and climate stability.
