The kind of sub-atomic particle that does not make up the nucleus of an atom is:

I think the answer is electrons. Reason --> Electrons are smaller than protons and neutrons, so that would mean that they orbit around the nucleus (the nucleus is made up of protons and neutrons)

The 2 sub atomic particles are protons neutrons and electrons is outside

Polyethylene is a strong synthetic polymer that can be used to make toys and bottles. this makes plastics which are important also to people but sometimes it lead to harmful environmental effects such as global warming if these plastics are burned.