Life on Earth quiz
1
How old is Life on Earth?
A
568,892,653 years exactly
B
350 million years
C
5,000 billion years
D
3,500 million years
E
4,008 years
2
What changed the air?
A
C
yanobacteria
B
The Great Penguin
C
Dinosaurs
D
People
3
What 'waste gas' do cyanobacteria and plants make (by photosynthesis)?
A
Carbon dioxide
B
Sugar
C
Oxygen