A sports car speeds up ouch faster than a
dump truck when a traffic light turns from
red to green.

A Sports car speeds up faster than a dump truck, when a traffic light turns from red to green , due to Newton's second law of motion.

Explanation:

Newton's  2nd law of motion states that the acceleration of an object depends on the mass of the object and the amount of force applied.

In this case, A sports car is lighter and less bulky than a dump truck .It has low mass. The acceleration is more for a race car than a dump truck.

This is the reason that a sports car speeds up much faster than a dump truck when a traffic light turns from red to green. It has more force than the dump truck.

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.