An assemblage of local plants, animals, and insects covering a large area such as a tropical rainforest or a grassland is called a
A) bioregion.
B) bionicle.
C) biosphere.
D) biogeography.
E) biore.
A
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The Appalachian Mountains formed by continent-continent collision 300 million years ago. Explain why they persist as a mountain range today despite 300 million years of erosion
What will be an ideal response?
Solar wind is composed of ____________________, or ____________________, travelling through space
Fill in the blank with correct word.
Judge the following sentence according to the criteria given below: Some chemicals have been classified as persistent organic pollutants BECAUSE of their toxicity, persistence, and propensity for accumulating in food chains
A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct but the reason is incorrect. D) The assertion is incorrect but the reason is correct. E) Both the assertion and the reason are incorrect.
The most compelling issue that is causing loss of grasslands in the Western United States is
a. destructive range fires b. harvesting grasses for hay for domestic animals c. conversion to cropland d. Overgrazing e. intrusion of forests into grassland areas