Question

vertical layers

1. a tropical rainforest is a realm of layers upon

layers, each one more intriguing than the other. each
vertical layer of vegetation features its own distinctive
flora and fauna, that is, plant and animal life.

the emergent layer

1. the tallest trees of the tropical rainforest are found here.

growing as tall as 200 feet and with trunks as wide as 16
feet in circumference, they poke high above the canopy.

the canopy

1. canopy is the thick roof of the tropical rainforest. the

biodiversity of animals is the highest in the canopy.
animals like monkeys, lizards, birds, tree frogs, and
sloths complete their life cycles here, never once leaving
the canopy. this biodiversity is due to the fact that about
80% of the sunlight is absorbed by the canopy, leaving the
layers below with very little to get by.

the understory and floor

1. for this reason, the understory and forest floor are not as

rich in animal life as the canopy. however, the warm
temperatures and humidity in these layers are just right

which part of the article shows cause and effect text
organization?
a paragraph 3
b paragraph 4
c paragraph 6
d paragraph 7

Explanation:

To determine which paragraph shows cause - effect organization, we analyze each option:

• Paragraph 3 (Option A) describes the emergent layer's trees (height, trunk size) without cause - effect.
• Paragraph 4 (Option B) describes the canopy and its biodiversity but no clear cause - effect.
• Paragraph 6: Not visible in the given text, so we can't consider it.
• Paragraph 7: Not visible. But looking at Paragraph 5, it says "For this reason, the understory...", and if we assume the relevant paragraph for cause - effect (relating to the canopy's sunlight absorption causing understory's animal life situation) is connected, but from the visible paragraphs, Paragraph 4? Wait, no, Paragraph 5 has "For this reason" which is a cause - effect indicator. But since the options are A - D with given paragraphs, and among the visible ones, Paragraph 4: Wait, no, the user's visible text for the question's options: Let's re - evaluate. Wait, the question is about which part shows cause - effect. Let's check the visible paragraphs:

Paragraph 4: "This biodiversity is due to the fact that about 80% of the sunlight is absorbed by the canopy, leaving the layers below with very little to get by." Here, "due to" shows cause (sunlight absorption by canopy) and effect (biodiversity in canopy, and less in lower layers). Wait, but the options: A is Paragraph 3, B is Paragraph 4, C is Paragraph 6, D is Paragraph 7. So Paragraph 4 (Option B) has the cause - effect relationship (cause: 80% sunlight absorbed by canopy; effect: biodiversity in canopy, less in lower layers).

Answer:

B. Paragraph 4