Page 158 - SCIENCE DLP T6 SK (SEMAKAN 2017)
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Biodegradable and Non-biodegradable
Waste
Jesy’s father asked her to sort out the domestic waste based on the different
types before throwing them into the bin. Let us follow their conversations.
Jesy, have you sorted out Father, why do waste
those waste materials before materials need to be
disposing them? sorted out?
Not yet, father.
Waste materials need to be sorted out
because there are biodegradable waste
and non-biodegradable waste.
Biodegradable Waste
Biodegradable waste is materials
Do you know what are that can be decomposed by
biodegradable and microorganisms such as bacteria and
non-biodegradable fungi. When decomposition process
waste? occurs, nutrients will be absorbed back
into the soil. Biodegradable waste
consists of organic materials as shown
in the pictures below.
food waste paper dry leaves faeces
and boxes
9.1.2,
150 9.1.3
