Which item is made from nonrenewable resources?
Solar energy
Gemstones
Vegetables
Wheat

What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?

When elements that form a mineral dissolve in hot water, they form a mixture called a(n) a)geode b)vein c)evaporation d)crystallization e)magma f)lava g)solution h)gem

Up to what percentage of the world's flora consisted of cycads during the triassic period? 100% 75% 50% 20%