The geologic column
A) was constructed by looking at evidence of major climate change.
B) is a hierarchical system dividing time into five categories.
C) is based in part on fossil evidence.
D) assigns equal time values to each era.
Answer: C
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"Edge effects" are a problem particularly when ________
A) formerly large habitats are reduced to small fragments B) wildlife corridors are developed in urban landscapes C) forests undergo biodiversity changes as a result of climate change D) trying to manage and protect island biodiversity E) preserves have a very large area and a roughly circular shape
The author urges us to consider environmental injustices both domestically and internationally. What does he mean by this? Give two examples.
What will be an ideal response?
Where is the majority of Earth's freshwater being stored?
A. rivers B. lakes C. glacial ice D. atmosphere E. groundwater
Divisions in geologic time represent ____
A)the passage of 10 million years B)a mass extinction C)distinct changes in the rock record D)the onset of Ice Ages E)the passage of 20 million years