UNIT 9: WASTE MATERIAL (9.1.4 LEARNING STANDARD) LISA

In the last school holiday, Izzati when for a picnic. She throw all her leftover food in the lake. What will happen to the aquatic lives?

• It can be the food for the aquatic animals

• It can help the soil in the water to gain the nutrient

• The level of oxygen in the water will be decrease and it can effect the breathing of aquatic animals.

• The level of oxygen in the water will be increase and help the breathing of the aquatic animals.

Answer explanation

The leftover food will be decomposed by the microorganism. The process of decompose and decaying will release the carbon dioxide and utilize oxygen in the water. Thus, the oxygen level decrease and the result become more dangerous when there is a lot of food waste is thrown into the water especially from the restaurants.

What is the reason we need to replace paper plates instead of using plastic plates for disposable products?

• It more beautiful

• It cheaper

• It is biodegradable

• It is non-biodegradable

Why need to use non-biodegradable waste wisely by changing from disposable plastic bags to the reusable bags

• It more stronger

• It is cheaper

• Reduce pollution from plastic bags

What happen to the animal if there is no human going to help the animal?

• It will die

• It barking

• It hungry

• It survive as usual

These animals fall prey to non-biodegradable waste dumped into the sea. What are the consequences of this action?

• Food chain will be disturb

• Aquatic animal populations are decreasing and threatened with extinction

• The population of aquatic animals increases

• Addition of food and nutrients to aquatic animals

What disaster that usually related to the unwisely use and management of non-biodegradable waste?

• Flood

• Volcano

• Raining

• Acid raining