In the southeastern United States, the red fire ant is

A) a natural predator that is a dominant species in forest ecosystems.
B) an invasive species that has caused a decline in biodiversity.
C) used to control invasive insect species that could potentially hurt agricultural crops.
D) has increased songbird populations that use it as food.


B

Environmental & Atmospheric Sciences

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Single-celled organisms can be found in all of the following groups except ________.

A. Bacteria B. Eukaryotes C. Archaea D. Animalia E. Prokaryotes

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Earth’s earliest atmosphere was most likely composed of

a. ?water vapor and nitrogen. b. ?carbon dioxide and helium. c. ?hydrogen and helium. d. ?hydrogen and oxygen. e. ?noble gases.

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Which biome would be found primarily in the temperate zone?

A) tundra B) deciduous forest C) savanna D) desert E) boreal forest

Environmental & Atmospheric Sciences