Exercise 3: Choose the word (A, B , C, or D) whose main stress is different from the others in the group. 1. A. pollution B. protection C. interest D. announcement 2. A. destroy B. contain C. detail D. reduce 3. A. effective B. habitat C. animal D. national 4. A. wildlife B. before C. habit D. notice 5. A. diverse B. unsafe C. marine D. harmful 6. A. community B. conservation C. contain D. protect 7. A. renewable B. resident C. species D. wildlife 8. A. forget B. remember C. discussion D. carry 9. A. diverse B. courage C. environment D. provide 10. A. reduce B. pollute C. oxygen D. consume C. resident D. source

Here are the answers and explanations for the stress patterns in the words:<br /><br />**1. A. pollution** <br />* **B. protection** (stress on the second syllable)<br />* **C. interest** (stress on the first syllable)<br />* **D. announcement** (stress on the second syllable)<br /><br />**2. A. destroy** (stress on the first syllable)<br />* **B. contain** (stress on the first syllable)<br />* **C. detail** (stress on the first syllable)<br />* **D. reduce** (stress on the first syllable)<br /><br />**3. A. effective** (stress on the second syllable)<br />* **B. habitat** (stress on the first syllable)<br />* **C. animal** (stress on the first syllable)<br />* **D. national** (stress on the first syllable)<br /><br />**4. A. wildlife** (stress on the first syllable)<br />* **B. before** (stress on the first syllable)<br />* **C. habit** (stress on the first syllable)<br />* **D. notice** (stress on the first syllable)<br /><br />**5. A. diverse** (stress on the second syllable)<br />* **B. unsafe** (stress on the first syllable)<br />* **C. marine** (stress on the first syllable)<br />* **D. harmful** (stress on the first syllable)<br /><br />**6. A. community** (stress on the second syllable)<br />* **B. conservation** (stress on the second syllable)<br />* **C. contain** (stress on the first syllable)<br />* **D. protect** (stress on the first syllable)<br /><br />**7. A. renewable** (stress on the second syllable)<br />* **B. resident** (stress on the first syllable)<br />* **C. species** (stress on the first syllable)<br />* **D. wildlife** (stress on the first syllable)<br /><br />**8. A. forget** (stress on the first syllable)<br />* **B. remember** (stress on the first syllable)<br />* **C. discussion** (stress on the second syllable)<br />* **D. carry** (stress on the first syllable)<br /><br />**9. A. diverse** (stress on the second syllable)<br />* **B. courage** (stress on the first syllable)<br />* **C. environment** (stress on the second syllable)<br />* **D. provide** (stress on the first syllable)<br /><br />**10. A. reduce** (stress on the first syllable)<br />* **B. pollute** (stress on the first syllable)<br />* **C. oxygen** (stress on the second syllable)<br />* **D. consume** (stress on the first syllable)<br /><br />**Key:** The words with the different stress pattern are highlighted in bold. <br />