Which of the following statements is true? A. Tissues are made up of organs and cells.

B.
All cells contain at least one tissue.

c. Organs are made up of cells and tissues.

D. Only some organs contain cells.

Write the empirical chemical formula of calcium with a mass percent of 38.8, phosphorus with a mass percent of 20.0, and oxygen with a mass percent of 41.3.

Why is silver chloride is an ionic compound

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.