Question

1. how might earth be different if the ozone layer did not exist?

Explanation:

Without the ozone layer, harmful UV-B radiation would reach Earth's surface, increasing skin cancers, DNA damage to organisms, reducing crop yields, disrupting ecosystems, and altering atmospheric temperature regulation.

Answer:

Earth would experience increased harmful UV radiation, leading to higher rates of biological damage (e.g., skin cancers, DNA mutations), reduced agricultural productivity, disrupted ecosystems, and potential climate changes due to altered atmospheric temperature balance.