Thermal energy is the energy associated with What?

What is a number added in front of a formula in order to balance the equation

How does carbon monoxide pose the greatest threat to humans? a. it can be produced by wood fires. b. it can be produced by home furnaces. c. it is produced by acid rain. d. it is produced by modern automobiles.

Compare and contrast an assemblage and a pollen fingerprint by defying both and giving examples of each from the chapter.