during cellular respiration, the covalent bonds of a molecule are broken down to make products. which molecule is broken down?

Although respiratory organs vary across different organisms, they all contain respiratory surfaces that have a large surface area and are extremely thin. explain why having an extremely thin respiratory surface with a large surface area is advantageous for the process of gas exchange

How does the viscosity of magma change as magma cools?

What energy is it when you flip on a switch on a lamp