Question

why is it important for the atmosphere to trap some heat from the sun? it causes climate change it keeps the planet warm

Explanation:

The Earth's atmosphere trapping heat from the sun is crucial for maintaining a habitable temperature. Without this heat - trapping effect, the planet would be extremely cold and inhospitable. Climate change is a negative consequence of an imbalance in this heat - trapping process, not the reason it's important in the first place.

Answer:

It keeps the planet warm