Earth is approximately 4.5 billion years old. is it likely that any of the rocks that were on earth's surface when it first formed are still in existence? a. no, most of earth's magma did not solidify until 1 billion years ago. b. yes, earth's surface has changed very little since earth was first formed. c. no, rock material is constantly recycled on earth's surface through the rock cycle. d. yes, rocks are very hard and should be able to survive for 4.5 billion years.

A. is the anwer

No, rock material is constantly recycled on Earth's surface through the rock cycle.

a straight line sloped

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.