Over the last 90 years in the United States,
A) the total area of forests has been reduced by about 90%.
B) the total area of forests has increased in size.
C) most national forests have been clear-cut and converted to agriculture.
D) most national forests have been replaced by commercial development.
B
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Which of the following produces the LEAST severe weather?
A. supercell thunderstorm B. squall line C. ordinary cell thunderstorm D. mesoscale convective complex
Which of the following is not a reason that grain size of sediment tends to decrease downstream?
A) gravity B) abrasion C) decreasing shear force D) rounding
Which of the following best matches the description?Limiting factors that are not affected by population size.
A. lag phase B. K-strategist C. carrying capacity D. exponential growth phase E. biotic potential F. dispersal G. death phase H. density-dependent limiting factor I. environmental resistance J. emigration K. population density L. age distribution M. r-strategist N. density-independent factor O. immigration P. stable equilibrium phase
Particles that are too large to be carried in eolian suspension are bounced along the ground as part of the bed load in the transportation process of _______________
Fill in the blank(s) with correct word