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15 cards from this deck
Any undesirable change or harmful addition to environment
Artificial enrichment of water by nutrients
Fertilisers washed into water cause algae growth
Bacteria decompose algae, use up oxygen, plants & animals die
Spread fertiliser in dry weather, use limited amounts
Wise management of natural resources for species survival
Increase mesh size so young fish escape, grow & reproduce
Reduce, Reuse, Recycle
Break down biodegradable materials in soil
Solid waste that settles during sedimentation
Methane collected, used as fuel for electricity
Up to 98%
Destroys remaining organisms in water
Removes mineral nutrients (nitrogen & phosphorus)
High cost
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