19)
a small car and a large truck are driving down a highway, which statement would support the premise that the truck has more momentum?
a) a large truck has a much larger mass.
b) a car has a smaller engine than a truck.
c) a small car accelerate faster than a truck.
d) a large truck can travel at close to the speed of the car.

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.