I think how long and how often.
Answer:
The atmosphere acts like a multi-layer shield that protects Earth from dangerous solar radiation. Ozone is found in two different parts of our atmosphere. The stratospheric ozone layer absorbs ultraviolet UV radiation, preventing dangerous UV rays from hitting Earth's surface and harming living organisms.
Answer:
Self generation
Explanation:
during these periods pepole were compelled to return to their hometown there they have known the real value of organic food and their importance.
Answer:
Thank you for informing me :)
Explanation: have a nice day!