Which of the following would be characteristic of the profundal zone?
A. rooted plants
B. low oxygen levels
C. nourished by dead matter
D. high photosynthetic activity
E. decomposers and detritus feeders
Answer: B
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Nearly all of the energy available on Earth comes from the ________
Fill in the blank(s) with the appropriate word(s).
In order for symmetrical patterns of magnetic polarity to be produced in the vicinity of a mid-oceanic ridge:
a. new crust has to be produced continuously at the ridge b. the oceanic crust must move away from the ridge in opposite directions c. the earth's magnetic field must periodically reverse itself d. all of the above
The fastest growing category of waste is electronic or e-waste.
Answer the following statement true (T) or false (F)
What are the three factors that determine the level of air pollution?
the identity of the pollutant, the amount of space into which the pollutant is dispersed, and the mechanisms by which the pollutant is removed from the air the amount of the pollutant, the identity of the pollutant, and the mechanisms by which the pollutant is removed from the air the amount of the pollutant entering the air, the amount of space into which the pollutant is dispersed, and the mechanisms by which the pollutant is removed from the air the amount of the pollutant, the amount of space into which the pollutant is dispersed, and the identity of the pollutant