Answer: 15.) negative EFFECT
- causes skin cancer
-causes sunburn
- damages the immune system
-fades colors
positive effects ( necessary)
- it triggers vitamin D -- VITAMINE HELPS STRENGTHEN BONES , MUSCLES AND BODYS IMMUNE SYSTEM.
- USEFUL FOR DISINFECTION AND STERILISATION
Explanation: THE EARTHS ATMOSPHERE BLOCKS MOST OF THE SUNS UV RADIATION FROM PENETRATING THROUGH THE ATMOSPHERE. THE SMALL AMOUNT THAT GETS THROUGH HAS BOTH POSITIVE AND NEGATIVE.
