Question

1. all the following are examples of human cause of erosion except (2 puntos)

planting of vegetation
overtilling
building of infrastructure
overgrazing

1. the waste materials left after a precious metal/mineral is extracted from the ore is called (2 puntos)

mine waste
erosion
tailings
gravestones

1. a rock that contains a metal or other economically useful mineral is called a(n) (2 puntos)

gem

Explanation:

1. Planting vegetation helps prevent erosion by holding soil in place, while over - tilling, building infrastructure, and overgrazing contribute to erosion.
2. Tailings are the waste materials left after a precious metal/mineral is extracted from the ore. Mine waste is a more general term, erosion is the wearing away of soil and rock, and gravestones are not related to ore extraction waste.
3. An ore is a rock that contains a metal or other economically useful mineral. A gem is a precious or semi - precious stone, not necessarily an ore.

Answer:

1. planting of vegetation
2. tailings
3. ore