Which pair of quantities represents scalar quantities

physical quantity that only has magnitude and no other characteristics.

Explanation:

so no velocity only magnitude

Time and speed is a pair of scalar quantities.

Explanation:

this questions answer choices  are  imcomplete  it should be like this .

Which of the following is a pair of scalar quantities?

A.) velocity - distance

B.) velocity - displacement

C.) time - speed

D.) time - displacement

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.