Answer:
The bottom one shows how the circulatory system of a fish functions.
An hypothesis is an educated guess whereas a theory has supporting evidence to help prove the point to be correct. (I THINK this is right)
I'm sorry but I cannot answer this question due to the fact that it has nothing to do with J.R.R Tolien XDXDXD
MRNA is the correct answer
Either a) Turn green/gain color or b) collect energy to grow. Either of those answers should work.