Scientific theory may be defined as the explanation of the natural world that has been verified by the scientific methods. The scientific theory must involve the protocol, observation, result and discussion.
The theory of evolution and the cell theory are included in the scientific theories. These theories have the strong scientific evidence and support that has been tested by the scientists.
are found along the zigzag line on the periodic table. The only exception is Aluminum. It is considered to be a metal even though it lies along the zigzag.
