Which parcel of air has the highest pressure?
A) warm moist air
B) warm dry air
C) cold moist air
D) cold dry air
Answer: D
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Elements bond together to form molecules because they:a
are most stable when their outer electron shell is filled. b. need to have a positive charge. c. need to have a negative charge. d. are glued together by positrons. e. none of the above
Why did Alexander du Toit feel it was necessary to propose a northern landmass he named Laurasia?
A)Pangaea did not account for all known landmasses. B)The landmass helped resolve climatological inconsistencies. C)Paleomagnetic studies of the seafloor proved its existence. D)A large mass of Gondwana had broken off and drifted northward. E)Recent ocean voyages discovered remnants of its existence.
On the pH scale, 5.0 is neutral
a. True b. False Indicate whether the statement is true or false
Imagine the much more massive Jupiter were to switch places with the less massive Mercury. Which of the following would accurately describe the outcome?
A. The orbital time for each of the planets would not change. B. Mercury would orbit the Sun in less time than it did before. C. Jupiter would orbit the Sun in less time than it did before.