Please find attached photograph for your answer. Hope it helps. Please do comment.
Answer:
d
Explanation:
uv is safe for humans but bad for bacteria etc... at least I think. I'm sorry if I'm wrong
Surface tension<span> is a property of the surface of a liquid that allows it to resist an external force. for example, some objects can float on the surface of water, even though they are denser than water, and in the ability of some insectsto run on the water surface. This property is caused by cohesion of similar molecules, and is responsible for many of the behaviors of liquids.</span>