How are pristine conditions of the atmosphere determined?
A) Research conducted prior to the Industrial Revolution
B) Seawater samples from deep within polar ice packs
C) Sediment samples
D) All of these choices
B
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The pair of terms wave speed and wave frequency are
A. opposites. B. reciprocals. C. basically the same. D. fundamentally different from each other.
This image shows the hypothetical planet in the investigation for the ocean interactions chapter. Which of the following places are the waters likely to be more saline than average?
A) In the subtropics of the Northern Hemisphere
B) In the subtropics of the Southern Hemisphere
C) Near the sea ice in the Southern Hemisphere
D) In all these places
The type of feature shown in this photograph is
A) fault scarp.
B) columnar joints.
C) shear zone.
D) folded metamorphic rocks.
This pyramid shows the ratio of organisms, energy content, and biomass at different trophic levels. Suppose that a system has 5000 grasshoppers. How many hawks would be expected?
a. 5 b. 50 c. 500 d. 5000