Question

the rain forests deep roots
rain forests around the world are earths most fascinating living ecosystems. some of these ecosystems have survived for 70 million years. tropical rain forests are regions that have a rainfall of more than 70 inches a year. these regions are found chiefly in the tropics. near the equator, the tropics are the hottest parts of the world. one of the largest tropical rain forests is found in areas surrounding the amazon river of south america.
the amazon rain forest
the climate in the amazon rain forest is hot and humid. the animals, the plants,
which is the best summary of the passage?
scientists have found precious minerals such as copper and gold in the amazon rain forest. they want to buy medicines there.
the amazon rain forest is a large region, and its ecosystems serve earth in many ways. trees there do well in the dry season.
the amazon rain forest has a muggy climate, but many things live there. trees in the environment can grow a few hundred feet.
scientists have been studying tree growth in the amazon rain forest. they are interested in doing more research in south america.

Explanation:

The passage starts by introducing rain - forests as fascinating ecosystems, mentions the Amazon as a large tropical rain - forest, and its hot and humid climate along with the presence of plants and animals. The best summary should cover these main points. The first option only focuses on minerals and buying medicines which is not the main idea. The second option about trees doing well in the dry season is not the main focus. The fourth option about tree growth research is also not the main idea. The third option mentions the Amazon as a large region and its ecosystems serving Earth and the presence of life in its climate, which best sums up the passage.

Answer:

The Amazon rain forest has a muggy climate, but many things live there. Trees in the environment can grow a few hundred feet.