What role does the ozone layer play in protecting living organisms?

The ozone layer plays a critical role in protecting living organisms from harmful ultraviolet (UV) radiation emitted by the sun. It acts as a shield, absorbing the majority of the sun's dangerous UV rays, which can cause a variety of health issues, including skin cancer, cataracts, and other negative effects on the immune system. Additionally, excessive UV exposure can harm phytoplankton and other foundational organisms in the ecosystem, which are crucial for the overall health of marine and terrestrial environments.

The ozone layer's protective function is vital in maintaining not only human health but also the integrity of various ecosystems, ensuring that biological processes can occur without the detrimental effects of heightened UV radiation. In this context, understanding the importance of the ozone layer helps emphasize the need for environmental protection measures that seek to preserve this crucial stratospheric layer.