I believe that organ is the brain...
Answer: prokaryotic cells
Explanation:
A prokaryotic cell is a cell without a nucleus. Since this is a simple definition I cannot explain much further, but an example of a prokaryotic cell is bacteria.
Neck length is what is going to change so that is the Independent Variable. The Dependent Variable is the Survival Rate.
Hope this helps
Answer:
trachea
Explanation:
it is a tube that connects troat and bronch