In subarctic (Dfc, Dfd, Dwc, Dwd) climates, which of the following explains the presence of a continuous, thin snow cover for many months of the year?
A) High snowfall totals
B) Long summers
C) Geothermal energy from within the Earth
D) Low evapotranspiration rates
E) Above-freezing temperatures in the winter
Answer: D
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Why is physical geology important?
A) It helps us to understand the physical and chemical interior workings of the planet. B) It helps us to understand how the earth looks. C) It helps us to better understand the physical surface for use in mapping. D) It helps us to understand the Earth's interior crust.
Why is water the most fundamental resource derived from the planet?
A) It has high surface tension. B) Its solid form is ice, another fundamental resource. C) Water is used for drinking and irrigating crops. D) Water weathers rock to form valleys and canyons.
Land and landscape are considered natural resources.
Answer the following statement true (T) or false (F)
A rock sample containing an isotope with a half-life of 12 million years has an initial mass of 72 grams. How much of the daughter isotope will be present after three half-lives?
A)4.5 grams B)9 grams C)18 grams D)54 grams E)63 grams