Groups of organisms with low biotic potential, such as gray whales, ________
A) are r-selected
B) are K-selected
C) show the initial stages of the extinction process
D) are not subject to density-dependent limiting factors
E) have escaped from the processes of natural selection and adaptation
B
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According to water resource experts, one of the two major causes of water waste is ____.
A. leakage B. long showers C. old toilets D. dishwashers E. cheap prices
Which of the following is not a proxy used for climate?
A. Weather instrument data B. Ice cores C. Cultural records D. Tree rings
Some desert plants reduce evaporation by closing their pores during the day and opening them at night to take up___________ ____________
Fill in the blanks with correct word
With distance from the spreading ridge, oceanic lithosphere becomes ________ and it ________
a. younger; subducts b. older; subducts c. younger; subsides d. older; subsides