Polonium-210 is an a emitter. What isotope is formed when 210Po emits an a particle?

A) 210At
B) 206Pb
C) 206Rn
D) 208Xe


B

Environmental & Atmospheric Sciences

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Wetlands, estuaries, mangrove swamps, and coral reefs are examples of ____.

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Which of the following mathematical functions can be used for local operations?

A. logarithmic B. trigonometric C. arithmetic D. all of these are correct E. both arithmetic and logarithmic

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Canada's vast northern regions are almost empty of population but are exploited for all of the following EXCEPT

A) agriculture. B) mineral resources. C) timber resources. D) hydroelectric power.

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The tropopause occurs at a ________ elevation above the tropics than above the poles because ________

A) higher; the stratosphere is thinner over the tropics and this allows the troposphere to expand B) lower; the troposphere weighs more in the tropics and so it sinks C) lower; the stratosphere is thicker over the tropics and so it compresses the troposphere D) higher; the troposphere is hotter in the tropics, and this causes the air to rise to greater heights

Environmental & Atmospheric Sciences