An upper-air front involves downward motion of the:a
tropopause.
b. stratopause.
c. low-level jet.
d. both a and c
a
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Lines on a weather map connecting points of equal temperature are called isotherms. Indicate whether the statement is true or false
Which of the following statements most accurately describes the benefits of Bt corn?
A) Because it contains a certain gene removed from a soil bacterium, Bt corn is immune to the European corn borer. B) Bt corn is resistant to the pesticide Bt, so farmers growing Bt corn can use Bt on the weeds in their cornfields without it harming their crop. C) Bt corn produces increased yields because it is resistant to infection from the Bt virus that lives in agricultural soils. D) Although Bt corn has its benefits, the use of Bt corn runs the risk of pests becoming immune to its toxins.
Air pressure decreases with height more rapidly in cold air than in warm air
a. True b. False
Show how extinction and plant succession are sometimes related
What will be an ideal response?