When you hear the word biology what do you think of ?

I think of Science!

Mostly the body, life, and how life works. I also think of how carefully we were created and that all of our systems work together to help us, well live!

they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.