Doppler radar uses active sensors
Indicate whether the statement is true or false
True
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When calculating the rate of natural increase, one does NOT include
A) birth rates. B) death rates. C) migration. D) both death rates and migration rates. E) both death rates and birth rates.
A semivariogram must be fitted with a mathematical model before it can be used in kriging. Why?
What will be an ideal response?
You are asked to pick a rock to make your great Aunt Petunia's headstone. You have been asked to pick the most durable headstone available and cost is no issue. What rock would most likely make the most durable and chemically resistant headstone in a humid environment?
A. a granite with a very high percentage of quartz and no fractures B. a limestone with many cracks filled with calcite C. a shale cemented with calcite and iron D. a marble with fine crystals of calcite E. a quartz sandstone cemented with calcite
The half-life of carbon-14 is about 6000 years. Assume that a sample of charcoal formed by burning of living wood 15,000 years ago. How much of the original carbon-14 would remain today?
A) between one-fourth and one-eighth B) between one-half and one-fourth C) more than one-half D) between one-half and one-third