A population of beetles in which some individuals are blue and some individuals are green evolves because the green individuals survive better, and so leave more offspring. This mechanism of evolution is known as
A) natural selection.
B) mutation pressure.
C) genetic drift.
D) gene flow.
A
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Over Earth as a whole, one would expect to observe the smallest variation in temperature from day to day and from month to month
a. ?at the North Pole. b. ?in the center of a large land mass. c. ?along the Pacific coast of North America. d. ?high in the mountains in the middle of a continent. e. ?on a small island near the equator.
The United States, Canada, and Japan are examples of ____________________ with a high average per capita GDP.
Fill in the blank(s) with the appropriate word(s).
In 1969, the first law addressing environmental concerns was passed in the United States. This law is the ____________________
Fill in the blanks with correct word
What is the total ???? population of the contiguous ?? states? What will be an ideal response?