Which factors stimulate cell division when conditions are favorable?

Growth factors are the factor that stimulates cell division when conditions are favorable. It is added to cells to stimulate transcription of early response genes, such as transcription factor c-Fos; altogether these factors stimulate transcription of delayed-response genes. 
The cell number it depends on the amount of the cell division and cell death. 

This is what i found on google“ the monomers combine with each other via covalent bonds to form larger molecules known as polymers. in doing so, monomers release water molecules as byproducts. this type of reaction is known as dehydration synthesis, which means “to put together while losing water. in the process, a water molecule is formed.” i hope this you