What is minerals that break with uneven, rough or jagged surface have

After fertilization, which type of cellular division is responsible for the growth and development of a complex, multicellular organism?

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

Apuppy’s tendency to chew is inherited through which of the following? a. through learned behavior b.through genes c. through seasonal cycles d. through hibernation