About 70% of our planet is covered by oceans. compared to the depth of the solid portion of earth, the water on earth forms a

a) much thinner layer.
b) much thicker layer.
c) layer about twice as deep.
d) layer with a similar dept

Select the correct answer from each drop-down menu. in an experiment, dr. travis examined the effects of calcium intake on osteoporosis, a condition that causes an increased risk of bone fractures. the amount of calcium is variable. the risk of bone fractures .

Nh3 +02-no + h20 is unbalanced what is the balanced equation

Up to what percentage of the world's flora consisted of cycads during the triassic period? 100% 75% 50% 20%