Easy multiple ! ! 1.) if the velocity decreases, the acceleration has a value. positive negative 2.) a car turns a corner at 15 kph. if the car were to turn in a shorter radius, the centripetal acceleration will . decrease increase if the radius of the arc is decreased to one-half, the centripetal acceleration is changed to its original value. 1/2 1/4 2times 4times

whichever one it is, it's definitely not one that you included on the list you provided.

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.