A tourist bus is carrying passengers from the bottom of a hill to the top. The people, the bus, and the luggage can be analyzed as a single . The total amount of energy in the system as the bus travels. This situation happens because some of the kinetic energy changes to energy because of friction between the tires and the road.

568.98

explanation:

its math

unlike poles attract

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.