Electromagnetic waves called UV radiation. Ozone layer blocks out most UV radiation by absorbing it and that is important, because UV radiation can cause skin cancer. To prevent that you also shoud use sunscreen and sunglasses. Use this website and register you can learn a lot about stuff related to these things - jason.org
The harmful Ultraviolet radiations coming from the sun are blocked by the ozone layer. The UV radiations are divided into 3 parts:
UV-A
UV-B
UV-C
The part of the UV radiations which is completely blocked by the ozone layer is UV-C and others are partially blocked.
Ozone present in the troposphere is also called as bad ozone. It is also a
green house gas. It is the major constituent of the urban smog.
all rays on the high frequency side of the spectrum
The UV radiation is blocked by ozone. These are very fatal rays for life on earth.
UV rays are blocked by ozone. It is present as ozone layer.
Halogenalkanes are harmful to ozone. They react with ozone and deplete it.
No ozone is not always harmful. the ozone at stratosphreric level is good.
Halons are harmful for ozone. They also react with ozone to deplete it.
Ozone is harmful at ground level. It acts as a pollutant.
The harmful ozone is present in the troposphere. It is also called bad ozone.
Halogenalkanes are harmful to ozone. They react with ozone and deplete it.
No ozone is not always harmful. the ozone at stratosphreric level is good.
Halons are harmful for ozone. They also react with ozone to deplete it.
Ozone in troposphere is harmful. It acts as a pollutant.
The harmful effects of ozone are seen at ground level. Ozone acts as a pollutant there.
Ozone layer cannot be harmful. It protects us from harmful UV rays of the sun.
The ozone is harmful not at stratosphere. It is harmful at some layer. Te layer is troposphere.
Ozone is harmful at ground level. It acts as a pollutant.
It is harmful at ozone layer. It is because this leads to depletion of ozone.
The harmful ozone is present in the troposphere. It is also called bad ozone.
Ground ozone is harmful. It acts as a pollutant.
See "How can ozone be harmful and helpful?" in the "Related questions" section below.