Unit: Waste material (9.1.2 & 9.1.3 Learning standard)

What is biodegradable waste?

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  Materials can be decomposed by microorganism.

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  Materials that can not be decompose by microorganism.

• Material that can decomposed to nutrient that can be absorbed into the soil.

• Material that can not be decomposed.

Waste material that can be decomposed by microorganism is a__________.

Choose the waste material that is biodegradables waste.

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Plastic waste that can be found in the ocean or in the land takes hundreds of years to decompose and disintegrate naturally. This means that plastic is a type of waste _____.

• Biodegradable waste

• Non-biodegradable waste

Allysa has disposed of food waste such as vegetable waste, fish bones and rice by planting in the ground behind her house. After a year, Allysa returned to see what happened to the leftover food she had grown in the backyard. No more leftover food left. So, what type of waste is discarded food waste?

• It is the non-biodegradable waste material.

• It is biodegradable waste

Every time Sarah's mother goes to the cafes. She refuses to use straws and drink containers made of plastic. However, she brought her own tumbler. What is the reason behind Sarah's mother's actions?

• The drink containers and straws provided are not pretty and attractive.

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  To get discounts and cheap prices.

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  Aiming to save the environment and reduce disposable non-biodegradable items.

Based on the picture identify is the waste that is release by the boat is biodegradable or non-biodegradable.

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  Biodegradable

• Non-biodegradable

Which waste materials that can be turn into decomposed by microorganism?

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Which waste material that can stay in the environment for long times?

answer choices

Plastic

• Plastic

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  Paper

• Faeces

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  Toxic waste

• Metal

Which answers are not true as the toxic waste?

• Nail

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  Smog

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  Radioactive waste

• Book

• Petrol