11 How long will the earth last?

App. 7.5 billion years before consumed by the sun

12 How long has the earth had life?

3.7 billion years

13 How many years have humans been on the earth?

200,000 (modern humans)

14 When did first humans appear on Earth?

66 million years ago

15 How old is Lucy the first human?

3.2 million

16 Who started civilization?

Sumer of Mesopotamia

17 What is the Earth’s deepest point called?

Mariana Trench

18 What is the world’s deepest ocean?

Challenger Deep (Pacific Ocean)

19 Where is the lowest place on earth?

Lowest point on land is Dead Sea

20 What is at the bottom of the Mariana Trench?

Challenger Deep