After severe dust storms in the 1930s, practices were put in place to reduce soil erosion. Which practice best helped to reduce soil erosion?

What is donald trump wanting to build and have finished by 2020?

Surfaces of paintings—such as paper, canvas, and pottery—are referred to technically as

Which environmental change allowed people to travel by land between asia and north america a.human apaption to arctic environments b.the introduction to horses to north america c.the formation of ice sheets on land d.a rise in ocean temperatures