As Juan eats a hamburger, fats in the hamburger are broken down by bile, and the acid and enzymes in his stomach and small intestine break down other macromolecules. What type of changes are these?

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.

What must occur for air masses to form fronts