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Acid mine drainage
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Acid rain
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Acidic environments
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Acidophiles
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Acids
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Agriculture
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Alkalis
Ancient settlements
1
Bokoni
ELMO
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Faster-than-light space travel
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Giraffes
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Indigenous knowledge
Klein Karoo
1
Microbiology students
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Microorganisms
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Naturally acidic streams
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Ocean acidification
1
Oral bacteria
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Rocket scientists
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Shark citizen scientists
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Sinkholes
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Soil acidification
Southern Cape streams
Springs
1
Stream acidification
1
Warp drives
1
pH scale
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