How is oxygen 'sucked out' of our waterways?
- Written by Stuart Khan, Professor of Civil & Environmental Engineering, UNSW
Dead fish are a source of food for bacteria, which then extract oxygen from the river. AAP
A million fish have died in the Murray Darling basin, as oxygen levels plummet due to major algal blooms. Experts have warned we could see more mass deaths this week.
Read more: Explainer: what causes algal blooms, and how we can stop them
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