Which pair of formulas represents the empirical formula and the molecular formula of a compound

Select each correct answer. more than one answer may be correct. which of the following is a characteristic of unicellular organisms? they can possess tissues and organs. all of their functions are performed by a single cell. they are usually microscopic. each of their cells is specialized to perform a specific function.

Can someone me with 1 to 4 plz. fast

The grooves or folds of the brain are called