One of the reasons that it is difficult to restore an oak savanna is that
A. Too many trees are cut down illegally for their timber value
B. There are no natural fires to control vegetation due to human development of the areas
C. Too many wild animals destroy the bark of the trees
D. Too many weedy species take over the oak saplings
E. There is not enough suitable land remaining
Answer: B
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Questions about the danger of a particular chemical hazard will relate to that chemical's
A) toxicity, exposure, and dose. B) exposure in the natural environment. C) toxicity and abundance in the environment. D) ability to dissolve in either water or oil.
Soils with shale-derived parent material usually differ from those from sandstone-derived parent material in that they tend to
A. resist weathering more than sandstone-derived soils. B. be more drought-prone than the sandstone-derived soils. C. break down organic matter slower than sandstone-derived soils. D. form clays with more soluble cations than the sandstone-derived soils.
How can landslides be prevented during construction? (choose all that apply)A) retaining wallsB) cut steeper slopesC) install water drainage systemsD) add vegetation
What will be an ideal response?
Limestone, when exposed to heat and pressure, becomes ____.
A. salt B. quartzite C. granite D. marble E. bituminous coal