Question

what does the ozone layer protect us from

Answer 1

it protects us from uv rays

Answer 2

i hate to offend or discourage u but u should try googling it first

Answer 3

the sun's uv rays can be harmful. they cause sunburns and skin cancer.
if u are outside too long u get sunburn by all the uv. if there was no ozone layer we would get sunburns right away