The figure below represents the energy flow through a food chain consisting of four organisms. th total energy in the tissue of the green plant is shown in the box from biology book marshel page 308

not sure if this is what you'r looking for nnew= nold

thats not a question

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.