How has the model of the atom changed over the years? ?

The model of the atom has dramatically changed over many many years. At first scientist only thought there were electrons which are negatively charged. We learned atoms make up different substances and are the smallest particles of matter, which have subatomic particles that are very small portions of matter.

The model of the atom has dramatically changed over many many years.We learned atoms make up different substances and are the smallest particles of matter, which have subatomic particles that are very small portions of matter. At first scientist only thought there were electrons which are negatively charged.

Explanation:

a force of 500                  

the child will have heterozygous dominant chromosomes as characters of his father are dominant over the characters of his mother.

the child is heterozygous