- How does carbon get back into the environment from the food we eat?

The Carbon Cycle

Explanation:

Decaying organisms contain carbon, and that seeps into the soil- It can get into plants, which animals and we eat.  When we die, we put carbon into the soil, and when we breathe, we exhale carbon dioxide which is a form of carbon. Animal respiration, photosynthesis, and root respiration are also part of the carbon cycle.

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.