Ozone is both and harmful to life on earth.
true or false
i believe true?

It is true that ozone is both helpful and harmful to life on Earth. On one hand, there is the ozone layer in the atmosphere that protects the Earth from direct sun rays, and thus it protects us and the life on our planet from burning up. However, on the other hand, considering that it can be found in the air, it can be harmful to organisms that breathe it in, as it can cause problems with lungs. Also, it is a pollutant, and it is gradually destroying nature and crops on our planet.

Each side has to be less then the sum of the other two sides.a, b, c, and e work.

C.about 10% i think