Green World

Which of these can decompose?

• Plastic bag

• Glass bottle

• Banana peel

• Metal spoon

Answer explanation

A banana peel can decompose naturally through the action of microorganisms, returning nutrients to the soil. In contrast, plastic bags, glass bottles, and metal spoons do not decompose easily and can persist in the environment for a long time.

Why is deforestation harmful?

• It helps trees grow faster

• It destroys the habitats of animals

• It brings more water to us

• It makes the planet cooler

Answer explanation

Deforestation is harmful because it destroys the habitats of animals, leading to loss of biodiversity and threatening species with extinction. This disruption affects ecosystems and the balance of nature.

What helps reduce our carbon footprint?

• Drive more cars

• Use plastic straws

• Walk or ride a bike

• Burn more coal

Answer explanation

Walking or riding a bike reduces our carbon footprint by minimizing reliance on fossil fuels, unlike driving cars or burning coal, which increase emissions. Choosing these eco-friendly modes of transport is beneficial for the environment.

Which of the following is an example of using electricity?

• Sleeping

• Charging your phone

• Drinking fruit juice

• Playing outside

Answer explanation

Charging your phone is an example of using electricity, as it requires electrical power to function. The other options do not involve electricity directly.

What does "organic" mean in food?

• Only from animals

• Produced by machines

• Grown without harmful chemicals

• Frozen for a long time

Answer explanation

In food, "organic" means it is grown without harmful chemicals, ensuring a more natural and healthier product. This distinguishes it from options like being only from animals or produced by machines.

A planet is…

• A type of fruit

• A type of plant

• A large body in space

• A small toy

Answer explanation

A planet is defined as a large body in space that orbits a star, such as the Earth or Mars. The other options do not accurately describe what a planet is.

What happens when something decays?

• It becomes new

• It gets bigger

• It breaks down over time

• It shines brightly

Answer explanation

When something decays, it breaks down over time due to various processes, such as chemical reactions or biological activity. This is why the correct answer is 'It breaks down over time.'

A harmful gas in the air can…

• Help us sleep

• Help plants grow

• Be good for the Earth

• Hurt humans or animals

Answer explanation

Harmful gases can negatively impact health, causing respiratory issues and other problems for humans and animals. Therefore, the correct answer is that they can hurt humans or animals.

What is a product?

• Something we make or buy

• A tree

• A planet

• A location

Answer explanation

A product is defined as something we make or buy, which encompasses goods and services. The other options, such as a tree, planet, or location, do not fit this definition.

Less pollution means…

• More polluted air

• Cleaner air

• More vehicles

• Larger factories

Answer explanation

Less pollution directly leads to cleaner air, as it indicates a reduction in harmful substances in the atmosphere. The other options, such as more vehicles and larger factories, would contribute to increased pollution, not less.