HOW FOOD WASTE BREAKS DOWN
in a land till versus composting
LANDFILL
COMPOST
When food waste is thrown out in the trash A compost plle undergoes aerobic
it heads to the tandrill it gets buried and decomposition. Because it is exposed to
does not have access to oxygen - It oxygen, either by turning it or through the
undergoes anaerobic decomposition. use of living organisms, it produces carbon
Because of that the organic materials dioxide instead of methane. The food waste
release methane gas, which is much more decomposes faster and can be reused as
potent than carbon dioxide.
fertilizer
CARBON
METHANE
DIOXIDE
ОХ
OXYGEN
(i) What type of garbage is used for composting?
(ii) Which kind of garbage is not converted into compost by the redworms?
(iii) Which one of the following types of waste/garbage would decompose in the shortest
time
(a) Tincan (b) Glassware (c) Paper
(d) Plastic bottle
(iv) Correct the definitions of certain terms given below by changing only one word.
(a) Landfill: Garbage buried under water in an area.
(b) Compost: Substances converted into manure for use in industries.
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