Write a short note on ozone layer deplection in about 20 lines

Towards the end of the 1970's, there has been observed a two ozone layer events which relate to each other.

Explanation:

The first observation is the steady decrease in the amount of ozone layer in the earths atmosphere while the second one is an effect to the polar regions of the earth characterized by the reduction of the spring seasons in the stratospheric zone of the ozone layer.

Research has given the results that the main causative agent of the depletion of the ozone layer are human activities. The shift from using organic products to using a lot of chemicals, e.g, bromine and chlorine.

The effect of ozone depletion is that, it causes a number of cancer cells, it leads to aging of the skin, and also causes genetic mutations thereby affecting the current and future generations.

The ozone layer, when healthy, serves the purpose of preventing from harmful U.V rays from the sun.

the element that provides strength to the exoskeletons of clams and oysters is phosphorus. this is so because calcium carbonate is the main component in the shells.

explanation:

name and explain one of the event that occurs during meiosis that increases the variation in offspring even more than simple reproduction?