JAMB - Chemistry (2005 - No. 24)
Natural water collected from rivers and ponds contain oxygen, carbon (IV) oxide and
nitrogen
hydrogen
chlorine
sulphur
oxide
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Pond water does contain nitrogen, in various forms like ammonia, nitrite, and nitrate, which are essential nutrients for aquatic life and play a crucial role in the pond's ecosystem.
Nitrogen enters ponds through various sources, including rainfall, wind, run-off from land, and the decomposition of organic matter like leaves, twigs, and fish waste.