The origin and evolution of life

Question 1

When and how did the universe began

Answer 1

15 billion years ago, with a huge explosion known as the big bang

Question 2

How were stars and planets form

Answer 2

From the gases and dust from the explosion

Question 3

When was the solar system form

Answer 3

4 to 5 billion years ago

Question 4

When did the first living organism start to appear on earth

Answer 4

3.5 billion years ago

Question 5

For billions of years were did were did life exist

Answer 5

rivers, oceans and lakes

Question 6

What were the first multi cellular organism on land?

Answer 6

marine
invertebrates (animals that lack a spine)