A(n) ________ system is one in which energy moves freely in and out, but no matter enters or leaves the system
A) feedback B) closed C) equilibrated D) open
B
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When a rock is subjected to tectonic forces and experiences stress that is not the same in all directions, it is under
A) differential stress. B) convergent stress. C) tensional stress. D) alternating pressure.
Freezing nuclei are a part of the _______________ process of forming precipitation
Fill in the blank(s) with correct word
What type of climate dominates in most of insular Southeast Asia?
A) constantly cool and dry
B) constantly cool and humid
C) constantly hot and humid
D) constantly hot and dry
E) occasionally hot and humid
Which of the following about improvements in air quality is correct?
A. Ozone levels have decreased greatly because there is less nitrogen gas in the atmosphere. B. Lead emissions have decreased greatly because of the use of catalytic converters which remove lead from vehicle exhaust. C. Carbon monoxide emissions have decreased greatly because carbon monoxide is destroyed by oxygen in the atmosphere. D. Sulfur dioxide emissions have decreased greatly because power plants were required to reduce their emissions which caused acid deposition.