Explain two lines of evidence for how we know that mountains have roots
What will be an ideal response?
During the survey of northern India, a plumb weight did not point directly towards Earth's center but was deflected towards the Himalayas. The amount of deflection is consistent with the Himalayas having a thick crustal root. Seismic data also show that the crust beneath the Himalayas is thicker than the adjacent area to the south.
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Which of the following conditions, working together, make the atmosphere most stable?
A. cool surface and warm air aloft B. warm surface and warm air aloft C. cool surface and cool air aloft D. warm surface and cool air aloft
Which of the following is not an approach communities have tried to address shoreline problems?
A) Construction of a seawall B) Construction of a jetty C) Lowering the local sea level D) Building a breakwater E) Replenishing sand
The presence of specific polycyclic aromatic hydrocarbons (PAHs) in the red blood cells of seagulls indicates ________
A) recent exposure to pollutants from nuclear waste B) recent exposure to pollutants from oil spills C) long-term exposure to pollutants from oil spills D) long-term exposure to pollutants from nuclear waste E) nothing of concern as PAHs are normally present in red blood cells
A creolized language is
A) extinct. B) a mix of indigenous and colonial languages. C) an isolated language family. D) a possible prehistoric superfamily. E) a revived formerly extinct language.