To take one obscure but critical  Life on Earth remained entirely one-celled for 3 billion years.
For three billion years, the only life-forms on Earth were single-celled organisms.
Single-celled organisms ruled the earth for only a billion years before more complex life-forms came along.
A woman is empty handed.
Men wearing vets
There are people.
Such a procedure is called building an audit trail.
The people are sitting in a movie theater.
Two boys are driving a toy jeep outside