The three main causes of death - cancer, heat disease, and injury, remain constant throughout life. following answers: truth false

These all are true cancer is a main cause, injury is as well. But, there is no such thing as heat disease, there is heat illness or exposure to heat that is a cause of death but not a main one. Now if it is heart disease than yes that is also a main cause of death. Hope this helps :P

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.

Many archeologists and anthropologists disagree with dr. thorne's view.  thorne strongly believes that what many calls "homo erectus"  was in fact  homo sapiens,  and that they migrated out of africa almost 2 million years ago and dispersed throughout europe and asia. that's way different  from what scientists have always believed about the evolution of the species.