How is the energy of an earthquake stored before the earthquake?

elastically strained rocks would be the answer.

First Law of Thermodynamics: Energy cannot be created or destroyed. The energy we see in the form of earth movement releases potential energy stored in the rocks that have been subjected to stress of subsurface movement without an actual break in the rock. Once it snaps, that is called strain, and the waves of motion are kinetic energy.

hope this helps:)sorry if it doesnt

the tricuspid valve is present between right atrium and right ventricle

answer;

-vessels in the chest

the diagnosis of angina pectoris literally means "vessels in the chest"

explanation;

-angina pectoris is the medical term for chest pain or discomfort due to coronary heart disease.it is the chest pain due to an inadequate supply of oxygen to the heart muscle. the pain is typically severe and crushing, and it is characterized by a feeling of pressure and suffocation just behind the breastbone.

agina pectoris is caused by reduced blood flow to your heart muscle. the blood carries oxygen, which the heart muscle needs to survive. when the heart muscle isn't getting enough oxygen, it causes a condition called ischemia