For some time, the english had little interest in colonizing for what two reasons?

The English had little interest in colonizing foreign areas because the people there were quite satisfied with their lives as they were (They were adverse to something that might disrupt their peaceful living) and because of the threat of Spain since Spain expressed interest in colonizing the Americas. 

Hi! after fertilization occurs, the zygote goes through mitosis and then differentiation (aka specialization of cells) to have a variety of cells that perform different functions. this allows for the creation of tissues and so on, all of which were once stem cells with no specific function.i hope i !