Answer: Doubling in size over equal time.
Explanation: Population exponential growth can be said to be an increase in the number by multiplying together a number of equal factors, where the exponent specifies the number of factors to multiply.
For example, in 7² the factors are all 7, the power is 2 and the exponentiation gives 49.
This example is indicative of doubling in size.
Your answer would be B. The most dangerous job in the United States. Because the cave can come down, if you don't have the right equipment you can damage your lungs, and you may get stuck down there, or really hurt.
Greenland is part of DENMARK.
the continent of denmark is north america
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