Ask Mr Brain...all will be explained

Why do slugs die when we put salt on them? The slug has a moist skin, so when you sprinkle salt on it, a strong salt solution quickly forms.

This leads to the process of osmosis. In osmosis, fluid from a weaker solution passes through a porous membrane to a stronger solution.

In this case, water is drawn through the skin of the slug into the stronger salt solution outside.

Result: the slug dies a lingering death by dehydration.

Can Aids be transmitted by mosquitoes? After all, many tropical diseases such as malaria are transmitted by mosquitoes.

Several experts have studied this topic and their conclusions have been published in various scientific journals.