Verbs:

1. contaminate (stress on the second syllable: con-tam-i-nate)
2. recommend (stress on the third syllable: rec-o-mend)

Nouns:

1. contamination (stress on the third syllable: con-tam-i-na-tion)
2. recommendation (stress on the fourth syllable: rec-o-men-da-tion)

Pattern: Typically, verbs have stress on the second syllable or later, while nouns often have stress earlier, especially on the third or fourth syllable.

Complete the questions:

a. What type of human activity contributes to global warming?

b. What effect does the destruction of the rainforest have on wildlife?

c. How can a reduction in air quality affect people’s health?

d. How can households reduce their water consumption?

e. Has the pollution in your hometown increased or decreased in recent years?

f. Does your country experience economic interference from other countries?

g. What is the best way for individuals to protect their local environment?

h. How can you support animal charities when so many humans live in poverty