Examlex
What is desertification? What causes it? What areas are at risk of desertification?
Copper
A reddish-brown, ductile metal that is an excellent conductor of electricity and heat, widely used in electrical wiring and plumbing.
Cement And Concrete
A specific construction material where cement, a powdery substance, is mixed with water, sand, and gravel to create concrete, a solid, durable building material.
Limestone
A sedimentary rock mainly composed of calcium carbonate, often formed from marine organisms.
Quartz Sandstone
Sandstone composed mostly of quartz grains.
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Q64: Home to the endangered Northern Spotted Owl
Q75: In terms of human-environment interaction,which of the
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