What’s he difference between a solstice and an equinox

A solstice is a point during the Earth's orbit around the sun while during an equinox, the sun is at its nearest point from the Equator. Another difference is that a solstice takes place on June 21 and December 22, while an equinox takes place on March 20 and September 22. One more difference is that during the summer solstice, the days are longer and in winter solstice, the nights are longer. For an equinox, the duration of day and night are both equal.

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his research revealed two genetically different groups of prokaryotes, which justified splitting kingdom monera into two kingdoms. the genetic and cellular differences were so great, that these two kingdoms were eventually placed into different domains in the current three-domain system.