It’s easier to use paper towel once and toss it (4)_______.

Which of the following can be inferred from the passage?

According to paragraph 2, what was the difference between conservationists and preservationists?

A language is at (1)______ of being lost when it no longer is taught to younger generations, while fluent speakers of the language (usually the elderly) die.

Ethnologue, a reference work published by SIL International, has cataloged the world’s known (4)_______ languages, and it estimates that 417 languages are on the verge of extinction.

The government has set up 30 parks and reserves to protect its animals, but their survival is (5) ________doubt because much of their habitat has been cleared for lumber or to grow crops.

According to paragraph 3, which side had the last laugh in the clash of ideologies?

Which best serves as the title for the passage?

The following statements are true, EXCEPT ________.

What are the Arabian Oryx, the black-footed ferret, the red wolf, the Guam rail, and the California condor?