Q: Answer the question

What is the primary source of energy for organisms from a beach ecosystem?
OPTIONS:
- sand
- oxygen
- the Sun
- the ocean

A: the Sun

Q: Answer the question

When an atom has a neutral charge, which particles within the atom have equal numbers?
OPTIONS:
- electrons and neutrons
- protons and electrons
- neutrons and protons
- ions and neutrons

A: protons and electrons

Q: Answer the question

Which is an example of light being reflected?
OPTIONS:
- taking a picture
- using a magnifying glass
- looking into a mirror
- using eyeglasses

A:
looking into a mirror