Hi, why in the following sentence have instead of has was used? I thought fraction was singular and require the verb has.
A very small fraction of these reactions have been studied at the energies existing inside of the stars, and a large part of those few cases have been observed using LUNA.
Thank you!
A very small fraction of these reactions have been studied at the energies existing inside of the stars, and a large part of those few cases have been observed using LUNA.
Thank you!