Which statements best describe a composite material? Select all correct answers. A composite may have more desirable properties than its components.

Composites all contain carbon, which makes them lightweight.

Composites form hydrogen bonds, which makes them stronger than their components.

A brick made of mud and straw is an example of a composite; a brick made of mud is not.

a. a primary source combines several different accounts of an event. b. a primary source generally benefits from having been written after an event.

explanation:

adding or remove a gaseous reactant or product changes the concentrations. if the concentration of reactant or product is increased, the system will shift away from the side in which concentration was increased (i.e. if the concentration of reactants is increased, the system will shift toward the products. if more products are added, the system will shift to form more reactants). conversely, if the concentration of reactant or product is decreased, the system will shift toward the side in which concentration was decreased (i.e. if reactants are removed, the system will shift to form more reactants. if the concentration of products is decreased, the equilibrium will shift toward the products).

explanation:

not clear

practical process described pest part of scientific investigation.

because practical knowledge is powerful then therotical knowledge.