Which of the following is true with respect to Ravenstein's laws of migration?
A. International migration creates no counterflow of migration.
B. Long-distance migration generally takes place in the form of moving from one large urban area to another.
C. Women are more likely to migrate internationally.
D. Step-by-step migration no longer takes place in today's world.
Answer: B
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A) were well on their way to becoming core countries. B) imported most of their manufactured goods from core countries. C) diversified their economies. D) in Africa and Asia achieved their independence.
How many interglacials (times where the temperature deviation reached 0 C° or greater) do you detect over the past 450,000 years? What is the average time between interglacials?
Examine Figure 18.2. The Vostok ice core is 3310 m (10,860 ft) long. The full record extends back to 422,000 years before the present. The figure shows CO2 in parts per million (ppm) and temperature anomalies in Celsius degrees. What will be an ideal response?
Placing contaminated water in a clear plastic bottle and exposing it to the sun can kill infectious microbes in as little as three hours.
Answer the following statement true (T) or false (F)
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