The reading material and lecture discuss several theories about ways that agnostids live. The writer presents several theories including free-swimming predators, seafloor dwellers and parasites. However, the professor put forward three reasons that directly contradict the theories and effectively prove that they are not persuadsive and somewhat inaccurate.
First of all, the writer suggests that agnostids can swim freely in the ocean. By contrast, in accordance with the professor, this veiw is not true. As animals which can swim fast in the ocean must possess a well developed eyes with good vision ability, agnostids only have tiny poor eyes and even seems blind. what's more, some other special organism can also help to swim, but it is not
First of all, the writer suggests that agnostids can swim freely in the ocean. By contrast, in accordance with the professor, this veiw is not true. As animals which can swim fast in the ocean must possess a well developed eyes with good vision ability, agnostids only have tiny poor eyes and even seems blind. what's more, some other special organism can also help to swim, but it is not