Earlier in the body of text this question was provided for, you should be able to find the passages: "No matter where you walk, you are walking on the crust of the earth. You would be on the crust even if you were walking along the bottom of the ocean." and "The lithosphere is the crust and the uppermost, rigid portion of the mantle. The crust can vary in thickness, and is made of two different types: oceanic crust and continental crust."
Answer: Lithosphere
The Lock and Key Analogy of Enzymes and Substrates: Enzymes act as a catalyst in a given chemical reaction (for example, lactase allows lactose to break down into Glucose and Galactose); enzymes lower the amount of energy required to make a reaction occur. There is a key concept to this theory: Enzymes are designed work for only one reaction; there is only one key that fits the lock perfectly. Without enzymes, our bodies wouldn't be able to handle the amount of heat the reactions that occur inside if there weren't any enzymes (or the reactions just wouldn't occur! In the Lock and Key Analogy, the substrate (Lactose in the <span>example) is the "key".</span>
At the interface of two fluids, there is a difference in pressure. This leads to the existence of a surface force, the surface tension, that shapes the fluid.
The surface tension of water is roughly 72 dynes/cm,
However, that is highly dependant on the characteristics of the considered material (physical and chemical), and thus all fluids (and thus liquids) do not have the same surface tension.
They each have different amounts of chambers. Fish have 2 chambers, and mammals have 4 chambers! Hope that helps!
