How does the skeletal system of an embryo differ from that of an adult?

Almost the entire system of an embryo is made of cartilage, whereas that of an adult is mostly made of bones.
Almost the entire system of an embryo is made of bones, whereas that of an adult is mostly made of cartilage.
Almost the entire system of an embryo is made of bones, whereas that of an adult is made of bones and cartilage in equal proportions.

Question

How does the skeletal system of an embryo differ from that of an adult?

Almost the entire system of an embryo is made of cartilage, whereas that of an adult is mostly made of bones.
Almost the entire system of an embryo is made of bones, whereas that of an adult is mostly made of cartilage.
Almost the entire system of an embryo is made of bones, whereas that of an adult is made of bones and cartilage in equal proportions.

SkyVoltage43 · Answer

@Warriorz13

Warriorz13 · Answer

Can you send me the calculator please? I bookmarked it on the other three computers, but I dont have it on here

Warriorz13 · Answer

Almost the entire system of an embryo is made of cartilage, whereas that of an adult is mostly made of bones.