Which method of separating a mixture involves passing a heterogeneous mixture through several layers of different materials?
O filtration
O decantation
O evaporation
O distillation

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.

What is the oxidation state of each individual carbon atom in c2o42−?

Can anyone answer these questions? ? i need it before 1: 00pm today