I want to say arthropods and flatworms. I am pretty sure that the others you cannot see the segmentation
<span>Pancreas
The pancreas is responsible for producing mixes of enzymes that are called pancreatic juice. This juice neutralizes acidic chyme that enters the small intestines. The pancreatic juice is responsible for helping the digestive system to digest proteins, fats, and carbohydrates. </span>
So that it can sustain different life that requires different environments. Angler fish, for example, require a dark and cold environment to thrive while tuna require a light and warm environment.
It would be the respiratory system
Light that passes through a polarizing filter is called a vacuum.
