What is one of the causes of daily variations in temperature on a planet’s surface? A.
the speed of a planet’s rotation
B.
the time it takes for a revolution around the sun
C.
the tidal force on the oceans
D.
the rotation of a planet’s moons

The earth's internal process which drives seafloor spreading is

Which statement about portugal is not true? a. it granted independence to its last colony in 1975 b. it has avoided conflict with spain c. it was a leader in european world exploration in the 1400s d. its economy is changing from agricultural to industrial b. it has avoided conflict with spain

How many structures do prokaryotic cells have in common with the eukaryotic cells? a. 2b. 3c. 4d. 5