15) a shell fossil with only 25% of its carbon 14 isotope remaining is most likely how many years old? a) 2865 b) 5730 c) 11460 d) 22920

the body's situation won't change the forces are equal opposit and on the same body

the entire statement is true and correct.  

there's no diagram, nothing is illustrated, and no question is asked.

d eras and periods

because growing process had stoped after 4-5 year