The Southern Delta Aquariid meteor shower’s brightness typically surpasses that of the Ursid meteor shower due to the interplay of three main factors—namely, the size and composition of the __________ velocity upon entering Earth’s mesosphere, with higher-velocity meteoroids releasing more energy, and atmospheric fluctuations, such as changes in temperature.
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Verbal·Standard English Conventions·Boundaries
mediumWhich choice completes the text so that it conforms to the conventions of Standard English?
A
meteoroids; their
B
meteoroids—their
C
meteoroids, their
D
meteoroids. Their