Question

evolution: when did it occur? life began on earth approximately 3.5 billion years ago. try writing that as a number here: and its still happening! everything that is alive today evolved from a common ancestor. which is kind of cool to realize that you are distantly related to a penguin and a cheetah, and a banana! name some other distant cousins of yours: now onto the how - how does evolution occur? enter charles darwin, the man behind the theory of natural selection lets take a look at his story!

Explanation:

Step1: Recall the conversion of billion

1 billion = 1000000000.

Step2: Multiply by 3.5

3.5×1000000000 = 3500000000.

Answer:

3500000000