As a result of a supernova explosion, every human being on Earth was bombarded on February 23, 1987, by about 100 billion neutrinos; fortunately, neutrinos are harmless elementary particles that are produced in nuclear reactions and that interact very weakly with matter.
As far as I understand "that" in the above sentence refer to particles, which is plural.
Isn't "that" is a singular pronoun?
As far as I understand "that" in the above sentence refer to particles, which is plural.
Isn't "that" is a singular pronoun?
















