Prevailing westerly winds cause easterly currents.
Answer the following statement true (T) or false (F)
True
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Another name for steep-sided dry canyons found in eastern Washington is what?
A) Gulches B) Box Canyons C) Coulees D) Perennial Canyons
Why is grain production in the Great Plains considered largely unsustainable?
A) Competition with cattle ranching is resulting in a decline in crop production. B) More and more people are becoming gluten intolerant, so there will be less and less demand for wheat, barley, and rye. C) The Ogallala aquifer is being depleted for irrigation water. D) The energetics of crop production in the Great Plains are such that more energy is needed to grow the crops than can be gotten from the crops. E) So many pesticides are needed for grain production that streams in the Great Plains are becoming dead zones.
The largest layer (by volume) of Earth, ____, is composed primarily of _____.
a. the mantle; iron and nickel alloy b. the crust; peridotite c. the mantle; peridotite d. the crust; quartz e. the core; iron and nickel alloy
Which of the following soils has the largest diameter particles?
a. sand b. humus c. silt d. clay