During the late Paleozoic, the present-day North America, Europe, western Asia, Siberia, and perhaps China formed the northern continent of ________
A) Gondwanaland
B) Greenland
C) Laurasia
D) Africa
E) none of the above
C
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Flea beetles alone are unlikely to eliminate all of the leafy spurge in a region. Instead, the number of leafy spurge plants and the number of flea beetles in a particular community may stabilize
At this point, both the leafy spurge and flea beetle populations A) have exhibited exponential growth followed by a crash. B) have experienced constant growth. C) are still experiencing exponential growth. D) are experiencing environmental resistance.
Glacial ice covers what percent of the global land area?
A) 10% B) 30% C) 40% D) 5%
Evaluate the economic challenges of Western Australia's mineral extraction industries
What will be an ideal response?
Judge the following sentence according to the criteria given below: Clown fish are not stung by sea anemone BECAUSE clown fish have a protective agent in the mucus that coats their bodies
A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct, but the reason is incorrect. D) The assertion is incorrect, but the reason is correct. E) Both the assertion and the reason are incorrect.