# Sources of Rubber

IELTS Academic Listening - 10 questions - 11 minutes - Note completion

Source: Recording, questions and answer key from Cambridge IELTS 21, Test 1, Listening Part 4. © Cambridge University Press & Assessment. Used for educational practice. Explanations and evidence notes are written by Testmigo.

## The recording

9 minutes of audio. Practice it with the player on the page; the transcript is on the answers page.

## Questions

### Questions 31-40: Note completion

Complete the notes below. Write ONE WORD ONLY for each answer.

Sources of rubber
Three resources which are essential for industrial civilisation
**(31)** _____
fossil fuels
rubber
Natural rubber
This mainly comes from the Pará rubber tree, now cultivated in South-East Asia. The supply is limited because
the growth of the tree is **(32)** _____
production cannot easily be adjusted because of increasing or decreasing **(33)** _____
the tree only grows near the **(34)** _____
extracting the latex (rubber) is labour-intensive
it is very difficult to **(35)** _____ rubber after production.
New threats include
lack of genetic diversity, leading to danger of disease caused by a **(36)** _____
a shift to the cultivation of palm oil
extreme **(37)** _____ events.
Synthetic rubber
may be used for engine parts and cooking utensils
is less **(38)** _____ than natural rubber
is unsuitable for many purposes e.g. the tyres of aircraft.
An alternative source of natural rubber
A wild flower (a type of dandelion) has rubber in its **(39)** _____.
It can be grown in many locations and does not require good **(40)** _____.

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