Which subatomic particles are located in most of the space within an atom? a. protons b. neutrons c. electrons

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C. Electrons

Explanation: -

Most of the space in an atom is empty. Through this space the electrons revolve around the centrally placed nucleus.

Inside the nucleus are present the protons and the neutrons. The nucleus size is very small compared to the rest of the atom.

Electrons carry negative charge, protons are positive and neutrons are neutral.

altitude, density, pressure

air gets less dense the higher the altitude and also the air pressure is less as altitude rises.

law of conservation of matter