Many hormones are proteins used in cellular communication. each hormone carries a specific message to specific target cells. state why each of these hormones is able to deliver a different message.

The reason as to why each hormone is able to deliver a different and very specific message is because each Hormone affects only specific cells that are called target cells, and also these target cells will bear a particular kind of receptor for a particular hormone. There is something called target cell specificity, such that hormones target a limited number of cells based on the presence of a specific receptor, as they circulate in the bloodstream. Target cells are capable of responding to hormones because they display receptors to which the circulating hormone can bind.

Silicon is cut into tiny pieces for computer chipslead is melted to form pelletsliquid water freezes to form ice

Answer : romans built laws to manage the pollution which was lead by smoke produced by the factories.

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.