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What single factor best distinguishes the short-grass, mixed-grass, and tall-grass prairies. 

Complete the sentence with the most accurate statement: Cheatgrass invasion in the sagebrush shrubland is _______________

Which of the following are considered biome shifts? (select all that apply)

What climate driver explains the pattern of increasing precipitation in the Great Plains moving west to east and corresponding to transitions from short-grass to mixed-grass to tall-grass prairie.

Fire suppression in the sagebrush ecosystem can result in a transition to what ecosystem?

Match biome types with descriptions

Herbivory includes grazing and browsing.

Musk thistle is an invasive plant. In year one, it forms a basal rosette (pictured below) and then in year two it bolts (grows stem), flowers, and dies. Musk thistle is an example of what kind of plant?

Which of the following is the largest level of organization below the biosphere?

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