Can someone answer these questions for me 20pts

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.

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex