Multicellular organisms .

1.are made of only one cell
2.reproduce by mitosis
3.reproduce through the union of sperm and egg cells
4.are made of more than one cell
5.have differentiated cells

Why do carbohydrate molecules function so well as fuel for the body?

The circles, or orbits, for electrons are called energy levels. each level can hold only a certain number of electrons. add electrons to each level until you can't add any more. how many electrons can each level hold?

What is the main fuel source for the work of the cell