Early Earth would have been inhospitable to many life forms of today because
A. the seas were warmer.
B. the atmosphere lacked oxygen.
C. the sunlight was weaker.
Answer: B
Environmental & Atmospheric Sciences
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Why are buffer zones important components of megareserves?
What will be an ideal response?
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The removal of a single or small groups of mature trees is called
A. selective cutting. B. seed-tree cutting. C. clear-cutting. D. shelterwood cutting. E. strip cutting.
Environmental & Atmospheric Sciences
The Chicxulub impact crater was the first evidence to suggest that a meteorite impact caused the Cretaceous-Tertiary mass extinction
Indicate whether the statement is true or false
Environmental & Atmospheric Sciences
The adjusting of geospatial datasets in real time to make changes to maps and other visual models is called
A) global positioning. B) geographic synchronization. C) geovisualization. D) remote sensing.
Environmental & Atmospheric Sciences