Which of the following components of the earth's atmosphere is considered a variable gas?
A. oxygen
B. argon
C. water vapour
D. nitrogen
Answer: C
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The layered appearance of foliated metamorphic rocks is due to the
A. realignment of minerals so that they are perpendicular to compressive forces. B. mechanics of weathering minerals. C. laying down of minerals, layer upon layer. D. recrystallization of minerals.
Trucks are most often used for short-distance delivery because they can be loaded and unloaded quickly and cheaply
Indicate whether the statement is true or false.
After a tornado is spotted:a
a tornado watch is issued. b. its direction of movement is carefully monitored by aircraft. c. a tornado warning is issued. d. hail begins to fall from the cloud. e. attempts may be made to change its direction of movement.
Match the term with the correct description.?
A. ?using materials, such as aluminum, again for the same purpose B. ?recycling materials into different products than the ones they were initially a part of C. ?recycling a product into something that is not as useful or long-lived as the original item D. ?waste generated in a manufacturing process E. ?waste generated from use of a product by consumers