By which of the following mechanisms do steroid hormones cross plasma membranes?
A) active transport
B) diffusion
C) both a and b
D) neither a nor b
B
Environmental & Atmospheric Sciences
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What any type of field generation cannot create is
A. electromagnetic waves. B. light. C. energy. D. all of the above
Environmental & Atmospheric Sciences
The most important factor in determining which biome is found in a particular area is ____.
A. soil type B. topography C. altitude D. climate E. tidal activity
Environmental & Atmospheric Sciences
The primary sources of the acidity in acid rain are the gases ________
A) H2SO4 and NO B) SO2 and NOx C) O3 and SO2 D) NOx and N2O E) O3 and VOCs
Environmental & Atmospheric Sciences
Streams with perennial flow continue to receive water between storms because of:
a. aquicludes. b. traction. c. peak flow. d. flood crests. e. base flow.
Environmental & Atmospheric Sciences