What is the difference between simple and stratified epithelial tissue?

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

Salt in oceans comes from and of rocks