An increase in a country's physiological density would suggest a(n)
A) increase in the amount of agricultural land.
B) limit to the number of farmers.
C) increase in the amount of irrigated land.
D) increase in the size of its population.
E) limit to the number of farm animals.
Answer: D
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North-flowing winds along the West Coast of North America produce ____, which has no direct effect on climate or productivity
A) ?upwelling B) ?diverging currents C) ?downwelling D) ?converging currents
If you had this type of deformation of a region, it would
A. thin the crust and cause subsidence. B. thicken the crust and cause subsidence. C. thin the crust and cause uplift. D. thicken the crust and cause uplift. E. None of these choices are correct.
The volume of water flowing through any part of a river per unit time is calculated by
A. dividing the channel's width by its velocity. B. dividing the channel's length by its cross-sectional area. C. multiplying the velocity times the length of the river. D. multiplying the velocity by the cross-sectional area of the river.
____________________ is a process by which chemicals entering the food chain in lower organisms become concentrated as they move to animals at higher trophic levels
Fill in the blanks with correct word