____ occurs when one or more populations of a species is no longer found in an area it once inhabited, but is found elsewhere.
A. Ecological extinction
B. Local extinction
C. Biological extinction
D. Natural selection
E. Speciation
Answer: B
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If there were no clouds, Earth would cool.
Answer the following statement true (T) or false (F)
What is an essential characteristic of the scientific method?
A) Uncertainty of the question becomes an absolute certainty after using the method. B) The hypotheses are always testable by careful observation and/or experiment. C) The questions asked are designed to always prove that the hypothesis is incorrect. D) Scientific observations always support the questions asked.
For which types of elements do we sometimes use the "ous/ic" system in naming ions?
A) alkali metals B) halogens C) noble gases D) transition metals
A type of acid rain is produced because of sulfur dioxide in the air
Indicate whether the statement is true or false