The mass extinctions that occured about 251 million years ago may have been caused by extensive volcanic activity.
a. true
b. false
Ans: a. true
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What is the main type of rocks in the Peninsular Ranges of Southern California and Mexico?
A. granite and metamorphic rocks that formed at depth B. flat-lying sedimentary rocks C. unconsolidated sand and gravel D. volcanic rocks erupted from a large volcano
You would be most likely to see a Shiite Muslim in which country?
A) Morocco B) Iran C) Egypt D) Turkey E) Cyprus
In order for a limestone landscape to develop into karst topography, the limestone formation must contain at least 30% if calcium carbonate
Indicate whether the statement is true or false
A projectile is launched at an angle of 15° above the horizontal and lands downrange. What other projection angle for the same speed would produce the same downrange distance?
A) 30° B) 45° C) 50° D) 75° E) 90°