What is an atom composed of? O mixtures
protons, neutrons and electrons
O matter
O compounds

Which two nations are doing the most to combat their environmental issues?

Which phrases describe oxygen's roles in earth’s atmosphere? check all that apply. allows fuels to burn forms clouds that produce rain is the gas that animals breathe is used by plants to produce food forms ozone that absorbs the sun's harmful rays

Why is democracy better than a dictatorship?