What objects do you own that probably contain rare earth elements? Cell phones and tablets will all contain some rare earth minerals. movement of people from Mongolia to Kazakhstan and back again to Mongolia?
What will be an ideal response?
The newly independent Kazakh government encouraged people to migrate back, so the population of Kazakhs would be higher (in relation to minority Russians). The ease of movement over a frontier-like border allowed circular migrations with people going back and forth between place of birth and homeland.
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If there were no natural greenhouse effect, Earth's average global temperature would be about
A. 100°C. B. 18°C. C. 0°C. D. ?18°C.
Water scarcity occurs when
A. Populations are evenly dispersed. B. Renewable water supplies are slow to diminish. C. Renewable water supplies are slow to recover. D. The demand for water exceeds the available amount or when poor quality restricts its use.
How do the tropical rain forests differ from the temperate deciduous forests?
A. Rain forests have more foliage at ground level than deciduous forests. B. Rain forests have fewer lianas than deciduous forests. C. Deciduous forests have a slower rate of decomposition than rain forests. D. Rain forests have lower species diversity than deciduous forests. E. Deciduous forests have a dense canopy of broad leaves, compared with an open canopy of the rain forest.
What type of rocks can usually be found in coastal beach environments?
a. Arkose and conglomerate b. Well-sorted, medium grained sandstone with ripple marks c. Sand with mud cracks d. Till e. Both a and b