Distinguish mid-latitude steppe from mid-latitude desert and describe where the two exist in the United States
What will be an ideal response?
Answer: Semideserts are transitional zones that separate the true deserts from adjacent climates. They are also called steppe climates, with reference to the associated vegetation type consisting of short grasses. True deserts are so dry that only a sparse vegetation consisting entirely of xerophytic species (that is, species adapted to drought conditions) can take hold.
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Of the following choices, which kills the most crop-eating insects each year?
A. spiders B. pesticides C. insecticides D. grasshoppers
Alpha and beta rays are deflected in opposite directions in a magnetic field because
A. they spin in opposite directions. B. alpha particles contain nucleons and beta particles do not. C. they have opposite charges. D. all of the above
Ocean floor topography can be estimated from space using ________
A) radar pulses that bounce off the ocean surface B) high resolution measurements of the earth's magnetic field C) laser beams that penetrate to the sea floor D) powerful sound waves that echo to the satellite
Describe some of the findings of the most recent FAO Global Forest Resources Assessment. What are the key elements of sustainable forest management?
What will be an ideal response?