What can the reader conclude about ecosystems based on the information in this passage? A.) Echo systems are always distinctly different and unique

B.) Ecosystems are interrelated with other ecosystems surrounding or including them

C.) Echo systems are slow developing entities of biological communities

D.) Ecosystems are clusters of Communal habitats in an area.

explanation:

the answer is cell division : )

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.