Continental crust commonly is less dense than oceanic crust. Indicate whether the statement is true or false
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Which of the following is not a recommended strategy for observing a landscape?
A) Observe the entire landscape first and then focus on smaller parts, one part at a time. B) Examine complexities of each feature rather than grouping features into types. C) Focus on one type of feature at a time, noting where this type of feature is present. D) Examine relationships between different features.
Earth's external heat engine is driven by ________.
A. tides B. meteor impacts C. the decay of radioactive isotopes D. residual cosmic radiation from the Big Bang E. solar power
Discuss the process of glacial erosion
What will be an ideal response?
When the number of breeding animals within a species on an island is small, evolutionary change may be rapid through ____
A) ?favorable adaptations B) ?natural selection C) ?unfavorable mutations D) ?physical isolation