The earths water supply is not affected from water pollution
Answer:
D. Science
Explanation:
Because science is the intellectual and practical activity encompassing the systematic study of the structure and behaviour of the physical and natural world through observation and experiment.
So that you can help them or lead them in the right direction whether that be counseling or an adult. If they are depressed. Also because they could be using or turning to drugs which can also make them depressed or emotional.