Read the passage below and answer the question that follows. This ecosystem is common in central and northern Asia. Flora include mosses, grasslands, and hardwoods. Animals of this ecosystem include Siberian tigers, antelopes, sheep, and snow leopards. Which of the following ecosystems is described in the paragraph above?

The clues point to the highlands ecosystem: it is found in central and northern Asia and supports a mix of mosses, grasslands, and hardwoods. Animals such as snow leopards and Siberian tigers also fit this region. Grasslands alone do not describe the full range of vegetation in the passage.

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