As per my opinion....
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.
(A) neutrinos are harmless elementaryparticles that are produced in nuclear reactions and that. ..maintain parallelism (B) neutrinos, which are harmless, are elementary particles produced in nuclear reactions
...
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.
(A) neutrinos are harmless elementaryparticles that are produced in nuclear reactions and that. ..maintain parallelism (B) neutrinos, which are harmless, are elementary particles produced in nuclear reactions
...
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