A cyclone is:
a. a funnel of fast-spinning wind
b. a huge rotating mass of low-pressure air in which winds converge and ascend.
c. a large rainstorm caused by differential heating of land and sea.
d. winds caused by the differential heating of land and sea.
b
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Evolution by _____________ occurs when the genetic makeup of a population changes over time as individuals that survive changes in environmental conditions pass that genetic advantage onto their children. Hint : two words
Fill in the blank(s) with the appropriate word(s).
A simple carbohydrate that plants and animals use to obtain energy is ____________________
Fill in the blanks with correct word
The majority of Russia's immigrants are from
A) Sub-Saharan Africa B) Southwest Asia and North Africa C) Former Soviet republics D) Eastern Europe E) China
The percentage by which a population grows in years is called the
A) doubling time. B) crude birth rate. C) natural increase rate. D) total fertility rate. E) life expectancy.