What is the primary reason that stars, including our Sun, shine so brightly?

They are burning like a giant fire

They reflect light from the center of the galaxy

What fundamental principle is expressed by Albert Einstein's famous equation, E=mc²?

The principle of quantum mechanics

The law of universal gravitation

It reflects red light from the Sun

It is covered in red vegetation

Its surface is rich in iron oxide

Blood rushing to the surface of the skin

A tiny muscle contracting at the base of each hair

The bending of light through a living organism

The ability of an organism to see in the dark

The production and emission of light by a living organism

The reflection of light off a living organism

Earthquakes and volcanic eruptions

A chemical compound called Capsaicin

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