Analizar motivos por los cuales el relieve actual de argentina se presenta de esa manera ,montañoso al O, llano al E

In a repredentive democracy: a.) people come together in large meetings to vote on public policy b.) the people govern themselves c.) political power is held by a small group of people d.) people elect officials to run the government for them

As water is cooled from 4 c to 0 c its density

What are the answers for the following questions?