Why do your ears pop when you ascend to high altitudes? Explain
What will be an ideal response?
Air pressure is lower at high altitudes. It takes your body a while to adjust to the new pressure. But at a certain point, when the difference in pressure inside and outside your ears is great enough, air rushes out of the higher-pressure zone inside your ear. This produces that "popping" feeling.
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In an essay, discuss the prospects of Iran becoming a politically ascendant force in Southwest Asia and North African geopolitics.
What will be an ideal response?
The boundaries of a park or nature preserve are usually based on
A. how much land can be effectively managed. B. political considerations. C. animal territories. D. an entire ecosystem. E. watersheds.
Answer the following statement(s) true (T) or false (F)
1. The tension between nationalism and cosmopolitanism in the 1930s precipitated World War II. 2. At the end of the 1900s, the Cold War reduced globalization. 3. Economic motives primarily drive international migration. 4. Increased urbanization leads to a phenomenon called "heat islands".
Briefly explain why saturated clay is a very unstable slope material. What will be an ideal response?