Question

read the paragraph from the section river usana.

the amazon river is the life force of the equally vast amazon rain forest. this tropical biome has as many as 100 different tree species on a single acre. they include the rubber tree, silk cotton tree and brazil nut tree. other important plant species include palms and ferns.

why does the author call the amazon river the \life force\ of the rain forest?

a to illustrate that many plants and animals live deep within the river itself

b to explain that the species of plants and animals there need nothing but water to survive

c to show the importance of the water it provides for the many species of plants there

d to compare the strong speed of the water in the river with other rivers in the region

Explanation:

To determine the answer, we analyze each option:

• Option A: The paragraph focuses on the rainforest's plant species, not organisms living in the river. Eliminate A.
• Option B: The text doesn't state that plants/animals only need water to survive. Eliminate B.
• Option C: The Amazon River provides water, which is essential for the diverse plant species (like 100 tree species per acre, rubber tree, etc.) in the rainforest. This matches the "life force" idea (water supports plant life).
• Option D: The paragraph doesn't discuss the river's speed or compare it to other rivers. Eliminate D.

Answer:

C. to show the importance of the water it provides for the many species of plants there