A sledgehammer is an example of what kind of simple machine? A. Wheel and axle
o
B. Screw
c
C. Wedge
D. Lever
SUS

I am 95 percent sure the answer in C

iron would move it is magnetic there is a mag field around the current in the wire

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.