Give the source of pathogens in the water.

Give the source of caffeine.

Give the source of cocaine.

Write the sources of water on earth?

What is addiction? Give the source of tobacco. List the ill effects of nicotine.

Define cannabinoids. Give the source of tobacco. List the ill effects of nicotine.

Given below are the pairs of pathogens and the diseases caused by them. Which out of these is not Ans. Certain pathogens attack the specific tissue/ organ and a matching pair and why?

Give the source of production of X-rays.

What are the sources of fresh water?