Unit 4.3 - What are other problems with current energy resources?
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Phrase:    1. global warming Phonics:   Audio:	Phrase:    2. nitrogen oxide Phonics:   Audio:
Phrase:    3. opencast mining Phonics:   Audio:	Phrase:    4. water ecosystem Phonics:   Audio:
Phrase:    5. desertification Phonics:   Audio:	Phrase:    6. soil erosion Phonics:   Audio:
Phrase:    7. sulphur dioxide Phonics:   Audio:

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