# PTE Reading FIB #27: Arboreal Ecosystems and...

Reading: Fill in the Blanks #27 - Level 2 - Feeds Reading

> In the text below some words are missing. Drag word from the box below to the appropriate place in the text. To undo an answer choice, drag the word back to the box below the text.

Trees, as ever, are or should be at the heart of all ____ on climate change. The changes in carbon dioxide, in temperature, and in patterns of rainfall will each affect them in many ways, and each parameter ____ with all the others, so between them, these three main ____ present a bewildering range of possibilities.

## Answer

Trees, as ever, are or should be at the heart of all **discussions** on climate change. The changes in carbon dioxide, in temperature, and in patterns of rainfall will each affect them in many ways, and each parameter **interacts** with all the others, so between them, these three main **variables** present a bewildering range of possibilities.

## Explanation

Blank 2 needs a singular verb because "each parameter" is singular, and "with" follows the gap. "Interacts with" fits. "Indicates with" is not a normal pattern. Blank 3 names the three factors listed earlier: carbon dioxide, temperature, and rainfall. These are "variables." "Variations" means changes, not the factors themselves.

## Hints

- Look at the words immediately preceding and following each blank to determine the required part of speech.
- Consider the scientific context; the passage describes how multiple factors influence each other.

[Practise this question with the exam timer](https://testmigo.com/pte/practice/reading-fill-in-the-blanks/arboreal-ecosystems-and-environmental-shifts) - [All Reading: Fill in the Blanks questions](https://testmigo.com/pte/practice/reading-fill-in-the-blanks)