Which of the following is NOT an important difference between continents and oceans?
a) thickness of the crust
b) composition of the crust
c) density of the crust
d) whether it is part of the lithosphere
e) elevation
Answer: d) whether it is part of the lithosphere
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The beginning of the Phanerozoic is marked by the ________
A) abundant life forms compared to earlier times B) formation of large land masses C) evolution of land plants and animals D) development of hard body parts, such as shells and bones E) existence of a modern atmosphere
All of the following statements about Mahayana Buddhism are true, EXCEPT
A) it is a nonexclusive religion. B) it is strongest in Southeast Asia. C) it holds that bodhisatvas help people reach liberation. D) it emphasizes liberation from the cycle of rebirth. E) it originated in India.
A tetrapod is a(n) ____
a. extinct dinosaur species b. reptile with four legs c. flying mammal d. type of fish e. four-legged vertebrate
Where is a "hole" in the ozone layer most notable?
A) The tropics B) The middle latitudes C) The Arctic D) The Antarctic E) Over the entire Earth