Patterned ground is a feature of _____
a. piedmont glaciers
b. periglacial landscapes
c. valley glaciers
d. cirque glaciers
e. ice sheets
b
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The fact that every organism in a biological community has a distinctly separate niche is largely the result of
A) abiotic factors: soil chemistry, temperature, and moisture. B) competition among many species for limited resources. C) seasonal climate changes. D) the fact that nearly all species live at the limits of their tolerance boundaries.
Wind turbines are generally more productive if they are ________
A) larger, to increase heat convection from the ground B) smaller, to minimize the number of birds that interfere with blade turning C) smaller, to increase heat convection from the ground D) lower, to minimize turbulence and maximize wind speed E) higher, to minimize turbulence and maximize wind speed
To help understand and visualize the extent and intensity of the human impact on the earth, some scientists use the concept of the human (or ecological)
A) analysis. B) convergence. C) footprint. D) region. E) settlement.
Which of the following conditions, working together, make the atmosphere most unstable?
A. warm surface and cool air aloft B. cool surface and cool air aloft C. warm surface and warm air aloft D. cool surface and warm air aloft