Wednesday, 16 November 2011

Worksheet 29


1. Group the correct answer into the appropriate box.

-produces toxic liquid that can contaminate the water

-economical way to dispose of biodegradable waste

-can cause the spread of diseases

-produces poisonous gases

-returns the nutrients back to the soil

-attracts flies and rodents

-reduces the amount of waste

-decomposes the organic waste to make fertilisers

-gives out unpleasant odour

-consumes oxygen in the water causing aquatic animals to die

Advantages of Waste Decaying

Disadvantages of Waste Decaying

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