O ar-condicionado reduz a umidade do ar e causa ressecamento das narinas. Como isso aumenta as chances de entrar em contato com micro-organismos causadores de doenças?

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).

one negative thing it that it can kill water animals. another negative thing is it can cause the destruction of ecosystem. one way water pollution can be reduced is to conserve energy.