the one that is considered a chemcial mutagen is : Tobacco Chemical mutagen refer to the substance that affected the DNA of those who consume the substancce or their offspring. Studies showed that consuming tobacco has proven to created DNA deformations for the fetus if it consumed by pregnant women.
The outer core. A molten nickle- iron alloy.
Through synapses that occur in our neurons that tell our brain for our body to act in the needed way
