Which of the following is a characteristic of the asthenosphere?
A)It lies beneath the lithosphere.
B)It is a rigid rock layer.
C)It is broken into plates.
D)It is more dense than the core.
E)It comprises the lower mantle.
A
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Which of these four lakes could only exist if they if they received water from precipitation or runoff from the land?
A. 2 and 3 B. 1 and 4 C. 3 and 4 D. 1 and 2 E. 2 and 4
Which of the following is most easily damaged by exposure to radiation?
A) bacteria B) human tissue C) viruses D) They are all equally easily damaged.
Consider a simple food chain in which a grasshopper eats grass, the grasshopper is eaten by a frog, the frog is eaten by a snake, and a burying beetle feeds on the snake after it dies . Which of the following is not correctly matched
A) beetle—detritivore B) frog—secondary consumer C) grasshopper—herbivore D) snake—primary consumer E) grass—producer
The majority of marine invertebrates are ________
A) adapted to life in the pelagic zone B) estuarine C) found only in benthic environments D) hypertonic with respect to their environment E) isotonic with respect to their environment