Predator-prey relationships are beneficial at the ____ level, but harmful at the ____ level.
A. individual; population
B. population; individual
C. individual; species
D. individual; landscape
E. landscape; species
Answer: B
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Which of the following is/are a setting(s) where surface water becomes groundwater?
A) A spring B) A river that is higher than the water table C) Where an impermeable unit lies at the surface D) All of these are correct. E) None of these are correct.
The ____________ ____________ describes the movement of water through its various reservoirs on Earth. Fill in the blank(s) with the appropriate word(s)
The Houston-Galveston, Texas, area has been sinking due to the ________.
A. dissolution of limestones B. withdrawal of groundwater by pumping C. dissolution of a salt layer D. weight of all the high-rise buildings and houses E. emptying of a magma chamber
Which of the following best describes Earth's outer core?
A. high-density rock B. low-density rock C. metallic liquid D. pure carbon E. metallic solid