If a plant cell completes the cell cycle in 24 hour, how many cells will be produced in a week? explai

The correct answer is 128 cells

Explanation:

Given: 1 complete cell cycle takes 24 hours. It means 1 plant cell divides into 2 cells in 24 hours. Thus, number of hours in one week will be:

24 x 7 days =  168 hours, if one cell cycle  takes 24 hours, then in 168 hours there will be 7 cell cycles.

So, first cell cycle will results into 2 cells and both these cells will divide and will results into 4 cells and then after third division it will 8 cells and so on..

Therefore, at the end of 7th division there will be 128 cells.  

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.