What is the compound, composed
mainly of protein and
carbohydrate fibers, that makes
up the cell walls of plants?

Which statements are true of a scientific theory but not a hypothesis

Which plains area lies in both the united states and canada? altiplano central canadian shield coastal plains great plains

Chalk is an ionic compound. which is a property of all ionic compounds that makes chalkboard? particularly useful for writing on a a high melting point hardness and brittleness inability to dissolve in water a multicolored appearance