Red worms or manure worms can grow to about 5-7 centimetres (3 inches) long and will eat their own weight in garbage every 24 hours. When worms are used in composting it is called vermicomposting.
Human digestion
Human digestion Many of the drugs that humans take survive the
digestive system and are passing through sewage works into rivers
and seas. Scientists believe that these drug pollutants are
responsible for the deaths of many tiny aquatic organisms. Some of
the drugs have also been found to alter spawning patterns in
different types of marine species. 10 MAY 2000
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