It can help, and tell you how likely you are to be burnt, and between which hours.
UV rays help us. It helps to create the vital ozone layer.
The ozone layer protects us from UV rays. These are ultraviolet rays that are very harmful.
regular exercise helps make us more alert and energetic, by releasing endorphins which is a chemical that improves our mood.
Bells tell us when it is time to do something, alert us when there is an emergency, and much more. IT EVEN TELLS US TO BE QUIET! (:
No, the Emergency Alert System can't alert us on the 2012 doomsday,because it is not confirmed that it exsists.
regular exercise helps make us more alert and energetic, by releasing endorphins which is a chemical that improves our mood.
ozone helps us by absorbing the harmful rays of the sun. These are UV rays which are high frequency rays.
UV reach us by ozone hole. It is the thinning of ozone layer.
what layer help us from uv rays
Ozone absorbs the UV to decompose. It thus protects us.
Ozone is protecting and will protect us. The protection is against UV.
alert means warm alert means warn sombody for something bad is fixing to happen