I think it might be d. the lungs expand and contract which increases the rate of blood flow so the muscles can convert and store energy
The stage of physical development during adolescence is called puberty!
I believe you should take a year off and do every prereq you can get at a local college or university. a way to check that would be to go on a computer and pull up the local college, and the college you set your mind to long term. so for instance LTC (long term college) may have a prereq Bio 213 and maybe you LC (local college) has a Bio 217. you would call the LTC and say hey, does your Bio 213 line up with LC Bio 217. Most of the time they will say yes. It saves a LOT of money.
Answer:
3.
C. The circular shape
4.
D. Arw there fragments of meteorites in and around the crater?
5.
C. Triangles became extinct