Can someone kindly explain to me what would happen if we increase and decrease the ozone's level?

I am doing my Science HW and the question are...

• What if we increase its level? Describe what will happen?
• What if we decrease its level? Describe what will happen then?

This is the site that we are supposed to use...



If we decrease the level of ozone layer so the harmful UV (Ultra Violent) rays succeed in reaching our earths surface and can cause immediate fire,skin cancer etc.... our earth soon may get like this

if the ozone get increases no sunligth will reach the earth leads to health disorders like decency of vitamin-d etcthe it would be and of our life

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