Apolygon is a square if and only the polygon has exactly four sides true or false

What causes the cycle of seasons on earth? the tilt of earth’s axis the shape of earth’s orbit the direction of earth’s orbit the distance between earth and the sun

Sink holes may eventually for to join a. wide valleys b. zone of aeration c. dripstones d. aquifer

Which of the following is the unit of measurement used to describe the severity of an earth quake?