A. level

A. danger

die when supplies run (41) ________ after becoming lost. In addition, sandstorms or blizzards may cause disorientation in severely-reduced visibility.

A. of

A. inconsistent

A. dunes

Permanent settlement in both kinds of deserts requires permanent water, food sources and adequate shelter, or the technology and energy sources to (38) ________ it.

A. grow

A. extremes

A. locates

Children like to ____28____ bubble with bubble gum. Some university students do too

A. turn

A. However

A. so that

A. mixture

A. The other

and in industries which distribute, maintain, and repair (33) _________ consumer goods.

A. everyday

A. growth

A. details

A. dependent

A. considered

A. things

A. working 

A. employers

A. replacement

A. manufacturing 

A. turn

A. more

Then the company (48) ________the flavor.

A. puts

Now companies use plastic and rubber made from petroleum (47) ________of chicle.

A. aside

A. The other

Which of the following conclusions is supported by the passage?

Which of the following is NOT mentioned as an example of microscopic sea life?

The author argues that there is more diversity of life in the sea than in the rain forests because

The word “there” in paragraph 3 refer to

The passage suggests that most rain forest species are

Why does the author compare rain forests and coral reefs in paragraph 1? Most of their inhabitants require water.

The word “appreciation” in paragraph 1 is closest in meaning to

What is the main point of the passage?

According to the passage, the highest amount of pheromone vapor is found

According to the passage, how are ants guided by trail pheromones?

The author mentions the trail pheromone of the leafcutter ant in paragraph 2 to point out