Question

1. paragraph 3 gives reasons that rainforests have large numbers of animal species, and paragraph 4 explains how visitors can appreciate those species.
2. paragraph 3 focuses on what happened to rainforests over long periods of geological time, and paragraph 4 focuses on what is happening in the present day.

part b
what is the irony suggested by the relationship in the correct answer from part a?

1. although rainforests have existed for millions of years, they are now threatened.
2. although rainforests contain many varieties of animal life, the animals can rarely be seen.
3. although the causes of rainforests diversity are fascinating, rainforests themselves can be boring.
4. although visitors may understand rainforests history, they may fail to see the surrounding beauty.

Explanation:

To solve this, we first need to know the correct answer from Part A (not fully shown, but assuming Part A's correct answer is option 4 which compares rainforests' geological past and present). Irony involves a contrast. Option 1: If Part A's correct answer is about past (millions of years) and present (current events), then the irony is rainforests existed long but are now threatened. Let's analyze options:

• Option 1: Contrast between long existence (past) and current threat (present) – matches the relationship from Part A (past vs present).
• Option 2: About animal visibility, not related to past - present.
• Option 3: Calls rainforests boring, illogical.
• Option 4: About visitors' understanding, not past - present.

So the irony is rainforests' long existence vs current threat.

Answer:

1. Although rainforests have existed for millions of years, they are now threatened.