What are quarks and neutrinos?

Quarks are fundamental particles that combine to form protons and neutrons, which are components of atomic nuclei. They come in six types, known as "flavors": up, down, charm, strange, top, and bottom, and they interact through the strong force. Neutrinos, on the other hand, are also fundamental particles but are neutral and extremely light, making them interact very weakly with matter. They come in three types corresponding to the three charged leptons: electron neutrinos, muon neutrinos, and tau neutrinos, and are produced in various nuclear reactions, such as those in the sun.