A family decided to take a canoe trip one summer. After paddling for an hour, they decided to drift along with the river current to take a break. When they stop, the canoe is traveling east at 1.3 m/s while the river current is moving 0.2 m/s to the west. When the canoe drifts into the path of another river that joins the first, the west-moving current is 0.8 m/s. How will the canoe be affected?

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.