When a difference in elevation between one location and an adjacent one develops, what force begins to drive erosion?
a. Pressure
b. Gravity
c. Weathering
d. None of the above
Answer: b. Gravity
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If we compare closely related rabbit species in tropical and arctic environments, we would expect the tropical species to be ________ in size and to have ________ legs
A) larger; longer B) larger; shorter C) smaller; longer D) smaller; shorter
The main difference between natural eutrophication and damaging cultural eutrophication is that in cultural eutrophication, the
A) speed of nutrient enrichment is much faster. B) oxygen levels tend to be higher. C) water tends to be clearer. D) submerged aquatic vegetation is completely suppressed.
You find some limestone rock in southern Indiana and notice that it has fossil trilobites in it. Later you find the same fossil trilobites in a limestone in Colorado. From this you determine that the two rock types were deposited during the same time period using what concept or principle?
A. principle of Unconformities B. principle of Cross-cutting Relationships C. principle of Uniformitarianism D. principle of Inclusions E. principle of Correlation using fossils
The time in Earth’s history before 4 billion years (4000 m.y.) is known as the ____
a. Hadean b. Proterozoic c. Archean d. Paleoarchean e. Eoarchean