In which of the following periods of the mesozoic era did a bird-like animal known as archaeopteryx appear? a. triassic b. jurassic c. cambrian d. cretaceous

How do ocean currents affect temperature? check all that apply. they carry cold water from the poles to the equator and cool air over land. they flow north and then south below the equator. they flow south and then north above the equator. they move warm water from the equator to the poles and heat air over land. they move east to west and create prevailing winds. they move west to east and create seasonal winds.

How long does it take for saturn to orbit the sun?

Find the equation of the line passing through the point (–1, 5) and perpendicular to the line 3x + y = 4.