Over time the original supercontinent broke into 2 large land masses what are the names of these two land masses

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

How do oceanographers measure the salinity of ocean water?

In the figure, polygon abcd is transformed to create polygon a′b′c′d′. this transformation is a by a factor of .