How do some cells become brain cells and others become skin cells, when the dna in all the cells is exactly the same?

Describe at least 2 abiotic and two biotic factors found in the desert biome how do these abiotic factors interact with the biotic factors

What kind of crystalline solid is graphite? o a. molecular solid b. metallic solid o c. network solid d. ionic solid

What is the name of the type of cell division that occurs in the prokaryotic cell cycle