Terms used to describe factors (or sets of factors) that limit population size include
A. extrinsic and intrinsic limiting factors.
B. environmental resistance.
C. density-dependent and independent limiting factors.
D. All of these are correct.
Answer: D
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Which of the following is the BEST way to ensure soil health?
A. Maintaining clean, open ground between rows B. Establishing ridges running up and down hills C. Strip farming and leaving residues on fields after harvest D. Clearing fields immediately after harvesting E. All of these are good practices in ensuring soil health
People with home septic systems often flush several cups of a powdered substance down their toilets every month or two to keep their systems healthy. These powdered substances most likely contain
A) bacteria and enzymes that help break down wastes. B) chlorine and other disinfectants that help to prevent soil contamination. C) chemicals that bind to heavy metals to keep them from leaching into the soil. D) acids that help to clean the insides of the walls of the pipes and septic tank.
Causes of shifts in relative elevation of land and sea along a coast include
A. melting of ice caps. B. glacial loading. C. tectonic movements. D. All of the choices are correct.
Discuss the strengths and weaknesses of four different types of weather forecasting methods.
What will be an ideal response?