About half of brazil’s labor force works in road construction service industries subsistence farming ethanol production

About half of Brazil’s labor force works in subsistence farming.

Explanation:

Though the division of labor in Brazil is fairly distributed among sectors like that of services, manufacturing, agriculture, etc., it is seen that most people who are engaged in occupations other than agriculture also practice farming to some degree along with their first profession. This kind of farming is majorly carried out to fulfill the purpose of self-dependence with regard to vegetables and grains and not to trade the produce for economic gains.

A. it is created from magma. the agents of a metamorphic rock is heat and pressure. (heat from intrusion of magma or burial)

The answer is that they depend on rainfall for their crops to grow. hope this .