Answer:
Cretaceous
rex live? T. rex lived about 66–68 million years ago during the Cretaceous Period in the western United States, including Montana and Wyoming.
Explanation:
Gradually as the result of many intermediate steps is my answer because as life on Earth for example started off with simple atoms making molecules, and as the time went past more complex compounds were be produced. And from there later on unicellular organisms started appearing. Nothing in evolution that I know of happens in a short time, at least from the human perspective.
Answer:
That wall is much larger.
Explanation:
wall is diff from cell.
Carbon atoms have more mass than other atoms. They have 6 protons and 6 neutrons plus 6 electrons!
