Cynodonts were mammal-like reptiles and considered to be ancestors of the true mammals
a. True
b. False
True
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The slow, subsurface cooling of magma into various types of intrusive igneous rock masses is called ____
a. pahoehoe b. pyroclastic c. plutonism d. effusive eruption e. volcanism
Which of the following is the most abundant natural greenhouse gas?
A) oxygen B) nitrogen C) water vapor D) methane E) carbon dioxide
The amount of ground water is ________ that of all rivers and lakes combined.
A. very minor when compared to B. equal to C. many times D. of uncertain amount compared to E. a little less than
What was one accomplishment of Captain James Cook?
A) ?He was the first to circumnavigate the world. B) ?He was the first to land on the coast of Antarctica. C) ?He was the first European to explore the South Pacific. D) ?He mapped the coasts of Australia and New Zealand.