Question

The atmosphere acts as a protective blanket around the Earth. The ozone layer in the atmosphere absorbs the harful ultraviolet radiation coming from the Sun and it from reaching the Earth. The atmosphere also absorbs the terrestrial radiation and keeps the Earth warm during nights and winter. The presence of atmosphere around the Earth reduces the extremes of temperature.

Answer 1

yes these all are characteristics of atmosphere these all work is done by oxen layer present in atmosphere... And I guess ur question is incomplete.

Answer 2

Yes the ozone helps to protect the earth but due to the increase in CO2 concentration. ..it is being depleted