Answer:
The Big Bang is commonly thought of as the start of it all: About 13.8 billion years ago, the observable universe went boom and expanded into being.
We know that life began at least 3.5 billion years ago, because that is the age of the oldest rocks with fossil evidence of life on earth.
Nonetheless, 3.5 billion year old rocks with fossils can be found in Africa and Australia. They are usually a mix of solidified volcanic lavas and sedimentary cherts.
Explanation:
Answer:
scientist and people have discovered things from a while ago and did research on it, such as dinosaur bones, etc.
Explanation:
