Can you

1) this type of dating would be used to identify a frozen woolly mammoth
a) uranium-lead
b) potassium-argon
c)radiocarbon
d)rubidium strontium

2) petrified wood is an example of a placement remain
a) true
b) false

3) most index fossils are still living
a) true
b)false

Explanation:

1) Is option C, Radiocarbon

2) i think is option A, true.

3) im pretty sure is option B, false.

i hope i helped :)

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.