Help As soon as possible: Scientists believe that some unicellular microorganisms can not only capture smaller organisms, but also use their chloroplasts. Explain how this can help unicellular microorganisms to survive in different conditions.​

multiply it by 5 in order for you to understand i cant give an exact answer.

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.

the answer is 100% density i've answered this question before and done the quiz myself.