Which of these is not a result of gravity?
a. planets orbit the sun.
b. galaxies attract other galaxies.
c. moons and rings orbit some planets.
d. stars create their own energy while planets and moons do not.

Which characteristics of temperature and salinity have the greatest influence on the movement of deep-ocean currentsa. warm and low salinityb. cold and high salinityc. cold and low salinityd. warm and high salinity

One reason that madrid became the capital of spain is because of its

What causes the drought cycles in africa? a. the jet stream b. mount kilimanjaro c. monsoon climate zones d. quickly evaporating rainwater