Your answer is hypothesis i think. There were no given answer choices so i went with what i think youre asking.
Answer:
Invertebrates can have bilateral or radial symmetry, or they can be asymmetrical. Bilateral symmetry means that the animal is arranged in the same way on both sides. Radial symmetry means the body parts are arranged in a circle around a central point.
Answer:
Specialized cells because they preform a specific function
To bring oxygen in the body because it is a respiratory organ fish
if the hypothesis is rejected, it may not need to be displayed
