Design a balance that finds mass by comparing the mass of known object to the mass of an known object to the mass of an unknown object. study the triple- beam balance used in this activity and think about how you could balance two or more objects. construct your balance and use it to find the mass of an object. how could you improve your balance?

really dont know just need some points

mountains can affect the climate of nearby lands. in some areas, mountains block rain, so that one side of a mountain range may be rainy and the other side may be a desert. much of airborne moisture falls as rain on the windward side of mountains.

explanation:

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.