Assessment 8 You carry a 5-kg rock up a road that winds around a mountain. The road begins at sea level and
is 2 km long. At the top of the mountain, you are 600 m above sea level. What is the change in
gravitational potential energy of the rock-Earth system? Represent the process with a bar chart.

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.

a 2,000 calorie based diet.