Answer:
The fittest organism survive and produce.
In everyday life, a "theory" means a hunch, or a figure. In science a theory is the demonstrated consequence of a few trials. i.e. nuclear theory... we realize that molecules exist and that everything is made of iotas, yet in science the expression "law" is not utilized as a part of the case that ensuing confirmation ever surfaced to make a superior or more exact theory.
The biconcave cells in blood that lack nuclei when they are mature are the red blood corpuscles.
<u>Explanation:</u>
The blood contains a combination of cells especially the Red blood corpuscles, white blood corpuscles and the blood platelets. The major function of the Red blood corpuscles is to carry oxygen and supply to all the parts of the body from the lungs and similarly carry carbon dioxide and supply to all parts of the body . To facilitate this it does not have a nuclei.
Answer:
The cnidarian has a much simpler neural system system (neural net of nerve cells), with it's only goal to find food and survive, compared to the more brain-like (ganglia and brain) structure of the mollusk who needs to be able to hide from predators and prey as well as get away as quick as possible to ensure to survival.
Explanation:
I don't know if it's 100% right but its the best I could do. Hope it helps!