Water _________ threatens aquatic life and has caused entire ecosystems to collapse.
Fill in the blank(s) with the appropriate word(s).
pollution
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Around the world, whiteness is the norm against which all other visible differences are compared
Indicate whether this statement is true or false.
The ____________________ ____________________ provides evidence for physical and biological events of Earth’s
history. Fill in the blank(s) with the appropriate word(s).
____________________ illustrate the relationships among members in a group of organisms, including the group’s
most recent common ancestor. Fill in the blank(s) with the appropriate word(s).
Geothermal heat pump systems can heat and cool homes ____.
A. almost anywhere in the world B. in cold climates only C. in warm climates only D. near hydrothermal reservoirs only E. near plate boundaries only