Kayla summarizes the cell theory to her class. She states that all organisms are made up of one or more cells. Which pair of statements correctly completes her summary?
A. All cells come from existing cells, and all cells have the same parts,
B. All cells are the same size, and the cell is the basic unit of all organisms.
C. The cell is the basic unit of all organisms, and all cells have the same parts.
D. The cell is the basic unit of all organisms, and all cells come from existing cells.

Acompound is found to contain 6.1% hydrogen and 93.9% oxygen. find it’s empirical formula.

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?

Select the correct text in the passage. which sentences describe examples of sustainable living? i live in an old apartment building downtown, but my company is based in an office park on the outskirts of the city. i drive an old car that needs to be replaced. i plan to buy a hybrid for better gas mileage, but for now i am able to carpool with a couple of friends from work. the drive to the office park is about 45 minutes each way, but we do get to work in a modern building. the architects just received a leed certification for the design.