The axe is an example of a simple machine, as it is a type of wedge<span>, or dual inclined plane. </span>
Kinetic theory of matter is the movement of the particles of the substance and temperature is the measurement of hot or cold over a period of time
This is apoptosis. in reference to sunburn, this is when cells die in order to protect you and your skin from damaged skin DNA (possibly cancer causing).
Diffusion is the movement of substances from high to low concentration
osmosis is the diffusion of water through a semipermeable membrane from high to low water concentration
