Question

1. which sphere of earth protects it from the suns harmful radiation?

geosphere
hydrosphere
biosphere
atmosphere

Explanation:

The atmosphere, specifically its ozone layer, absorbs and blocks the sun's harmful ultraviolet (UV) radiation, protecting Earth's surface and life forms from its damaging effects. The geosphere is Earth's solid rock/land, the hydrosphere is all water bodies, and the biosphere is all living organisms, none of which primarily perform this radiation-protective function.

Answer:

atmosphere