1. (Carnivorous) They don't rely as much on the mechanical breakdown of foods in the mouth as much as they usually eat their prey whole. They also have U-shaped stomachs.They regurgitate indigestible things (e.g. Large Bones). They have shorter, spiralling intestines, but this means it also has a large surface area.
2. One difference is that humans have lungs so that is used to oxygenate the blood while shark has gills. Another difference is that Sharks use the heat from their muscles, so rather then expelling it into the outside environment that actually use that to heat their blood and transfer the heat from warmer blood to passing colder blood.
3. I positioned my shark to be dorsal side up and have its ventral side facing down.
4. The pectoral girdle is in a location where the cartilage is very thick.
The type of fish that has a flexible skeleton made of cartilage is known as a Cartilaginous fish.
Nonnative species often lack natural controls found in their native habitat.
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Answer:
Anaerobic respiration in plants produces ethanol (C2H5OH) whose accumulation may kill the plant, whereas in animals anaerobic respiration produces lactic acid (CH3CH(OH)COOH) that however cannot cause death of animal but lead to minor muscle cramps, but they can be cured with hot water bath or a massage.