. Find the word which has a different stress pattern from the other. Read the words aloud.
1. A. chemical B. footprint C. sustain D. necessary
2. A. reduce B. battery C. hydro D. station
3. A. adsorb B. efficient C. building D. pollute
4. A. damage B. balance C. replace D. greenhouse
5. A. generate B. landscape C. layer D. machine
6. A. natural B. prevention C. habitat D. pressure
7. A. scientist B. recycle C. survive D. resource
8. A. solar B. violation C. temperature D. generator
9. A. transportation B. conservation C. emission D. devastation
10. A. useful B. alternate C. atmosphere D. communication
11. A. panel B. every C. convenience D. power
12. A. biogas B. renewable C. plentiful D. relative
13. A. excellent B. amount C. alternative D. increase
help me . many thanks