Help me pls pls pls 30 points on the line for who get it correct and brainlist it is 6th grade science it not college I might put it in the wrong subject so yea help pls :)

What are economic benefits of building dams

Venezuela’s economy relies most heavily on which of the followingvenezuela’s economy relies most heavily on which of the following? a. oil reserves in places such as the eastern llanos b. cattle ranching in the grasslands c. fertile farmland in the andean highlands d. coffee plantations in mountainous areas

According to the population pyramid, in 2000 china had about 120 million people in which age-group?