Chemical waste can <cause> water pollution. In other words, chemical waster is one of the <causes> of water pollution.
cause (v, n): dแบซn ฤแบฟn, nguyรชn do
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20
If the drinking water is _____, an outbreak of cholera may happen. (treat)
untreated (adj): chฦฐa qua xแปญ lรฝ
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15
The <algae> will poison the fish.
algae (n): tแบฃo
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15
Can you name some point source and non-point source pollutants?
PS pollutants: industrial waste from factories, sewage from households, pesticides and herbicides from farms, etc. NPS pollutants: storm water, atmosphere, etc.
