After a zygote is formed, specialization of cells occurs. through which process do the cells of zygote become specialized?

a) meiosis
b) sexual reproduction
c) fertilization
d) differentiation

Aseries of connections of food chain in an ecosystem is called a what

Which of the following is true of microbes? a. ninety-nine percent of all microbes are pathogenic.b. gene expression in bacteria is very similar to gene expression in humans, which facilitates the use of bacteria in recombinant biotechnology and gene therapy.c. all bacterial enzymes are harmful to humans and the environment.d. microbes create pollutants and toxins that harm the environment.

At which location in earth’s interior does the top density continue to increase as thickness decreases?