Um agricultor, interessado em aumentar sua produç? o de hortaliças, adotou o sistema de cultivo em estufa. desse modo, poderia controlar fatores tais como concentraç? o de co2, luminosidade e temperatura, os quais interferem na taxa de fotossíntese e, consequentemente, na produç? o vegetal. sobre a aç? o desses fatores na taxa fotossintética, é correto afirmar que:

answer; ///i believe that the correct answer is (d); ///

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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.