Pepsinogen, a digestive enzyme ,is secreted by the chief cells in the gastric mucosa.
They will start to get very mushy, but they will stay at room temperature.
Answer: a crack forms, magma pushes upward, magma hardens, rock moves outward.
They are part of the stomatal can be found in the skin of the leaf and stem. Guard cells have characteristic shapes can be bean-shaped or like sponge cake. They have thickened cell walls contain living protoplasm of chloroplasts (as opposed to skin cells)
