The generation of the electrical potential needed for neurotransmission requires that which of the following has a low concentration in cerebral tissue?
A) Cl-
B) K+
C) Na+
D) O2
B
Environmental & Atmospheric Sciences
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What types of organisms have heterocysts and what are they used for?
What will be an ideal response?
Environmental & Atmospheric Sciences
Which of the following would have been LEAST likely to be a plantation crop?
A) tea B) sugar cane C) cocoa D) cotton E) corn
Environmental & Atmospheric Sciences
A glacier confined within a valley that originally was formed by stream action is called a(n)
A) tidewater glacier. B) valley glacier. C) piedmont glacier. D) ice cap. E) cirque glacier.
Environmental & Atmospheric Sciences
Earthquakes with a very deep focus are usually located along ________
A) a divergent plate boundary such as the Mid-Atlantic Ridge B) a convergent boundary such as the Peru-Chile trench C) a hot spot chain such as the Hawaiian Islands D) a transform boundary such as the San Andreas
Environmental & Atmospheric Sciences