Rocks are grouped into three classes depending on how the rock was
A. discovered.
B. located.
C. shaped.
D. formed.
Answer: D
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Which of the following statements about peppered moths in England is FALSE?
A. In polluted areas, dark moths survived better than light moths. B. After pollution control laws were passed, dark moths became more common than light moths in urban areas. C. Bernard Kettlewell's experiments suggested that bird predation was responsible for evolution in peppered moth coloration. D. In the countryside, light moths survived better than dark moths.
A number of factors tend to stabilize the geography of culture regions. List some of these factors
What will be an ideal response?
Explain how, where, and when the green flash occurs
What will be an ideal response?
Ecologists distinguish two different kinds of competition. An example of one is
A. intraspecific competition results in one species eliminating another species. B. interspecific competition occurs between animals and plants. C. intraspecific competition occurs between organisms of the same species. D. None of the statements is correct.