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

Using the periodic table, determine which material is most likely a good conductor

Elephants in the savanna regions of africa dig holes in dried up river beds to reach water lying just below the surface. these holes provide drinking water for other animals as well. so, without the elephants, many animals might otherwise die from lack of water during the dry season. the location in which the elephants live is an example of a/n and the role they play in creating water holes is an example of a a) ecosystem; habitat b) community; niche c) habitat; niche d) niche; habitat

What materials must dams have to produce electricity, and what must occur?