The species that are generally most vulnerable to human impact are the ________
A) decomposers
B) producers
C) competitive species
D) top predators
E) keystone species
D
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What happened to wind directions between January and July?
A) The westerlies reversed direction, becoming easterlies B) The easterlies reversed direction, becoming westerlies C) The wind directions shifted in their position relative to the equator D) The wind directions did not change between January and July
The pycnocline can occur at the same range of depths as a halocline
Indicate whether the statement is true or false
It is common to hear about the huge reproductive potential of some organisms. For example, if all of the eggs of houseflies were to survive to maturity, the world would soon be covered in flies. This scenario does not happen on Earth because
A) the biotic potential would be limited by environmental resistance. B) the biotic potential would continue to increase. C) environmental resistance would increase, increasing the carrying capacity. D) house flies would find it too difficult to locate a potential mate.
The "four Rs" of waste reduction present an alternative to the ____ economy.
A. sustainable B. ecosystem C. recycling D. profitable E. throwaway