fill in the blank. to form a multi cellular organism, a zygote must divide many times in a process called . Adult stem cells are considered , as they can differentiate into several different cell types in the tissue where they are located.

chert is a sedimentary rock composed of microcrystalline or cryptocrystalline silica. with this little bit of information, you can come to the conclusion that your answer is c.  

explanation:

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.