Noah and Nathan are working in the garden.

They are planting vegetables.

They are working because they love the earth!

"We need to look after the earth, so the earth can look after us," Noah says.

They are planting vegetables for their own food.

"Growing our own vegetables can also save us money," Nathan says.

Nathan asks Noah to tell him more about the earth.

Noah says, "Let's sit down."

Noah says, "The earth is the round planet on which we live.

About eight billion people live here!"

Nathan thinks about this. "Those are very many people?" he says.

Noah says, "The earth moves round the sun."

Nathan asks, "Why don't we fall off the earth?"

Noah replies, "The force of gravity pulls us towards the earth."

Nathan asks, "How do we take care of the earth?"

Noah replies, "We should reduce our waste and recycle it."

Noah continues, "We should recycle plastic, paper, glass, and cans."

Nathan thinks about what 'recycle' means.

Noah explains, "We must be able to change things so we can use them again."

Nathan is happy. "We need to care for the earth so we can stay alive."

Questions:

What are Noah and Nathan doing? Why?

Write 4 facts about earth.

Why should we take care of the earth?

What does it mean 'to recycle' things?

What can be recycled? List examples.

Name all the continents that are on earth from the largest to the smallest.

List 10 African countries with the biggest human population.