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GRADE 4 (Waste Materials)
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What is the cause of spoiled fruit or vegetables?
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When do you consider a material as waste?
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What is composting?
Composting is a natural process that breaks down organic materials into reusable resource. It improves soil.
What is Recycling?
Making new useful things out of unwanted materials/wastes.
Give ways on how will you reuse materials at home
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Why do we have to reuse things?
Causes less pollution than recycling or making new products from virgin materials
Give ways on how to reduce waste?
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Why do we Reduce Waste?
Less waste saves resources and money, reduces pollution, and helps the earth.
What are the 3R techniques to practice zero waste management?
Reduce, Reuse and Recycle
What are the ways on recycling plastic bottles?
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Give 2 ways of making wastes useful
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What should we do to the unwanted waste?
Send them to Recycling factories
What are the 3 classification of waste?
unused, unwanted and spare
How to identify spoiled food?
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How should we dispose leftover food?
composting
What is the cause of decay?
decomposers like bacteria, fungi, worms, insects etc.
What should we do to save energy?
Conserve water and electricity, use recyclable materials
Give 3 examples of organic waste
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What is the most harmful effect of Nonbiodegradable Wastes?
Pollution
How can you help solve waste problems in your community?
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Give 3 examples of Nonbiodegradable Wastes
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These material can be defined as a type of material which cannot be broken down by natural organisms and serve as a source of pollution.
Nonbiodegradable
Give 3 example of Biodegradable wastes
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A material or substance can be defined as a material which can be decomposed easily by bacteria or any other natural organisms and not being the part of pollution is called?
Biodegradable Materials


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