Cahpter 2 Critical thinking question

2. Why are most oceanic trenches found in the Pacific Ocean?
The Pacific Ocean is shrinking and plates are descending below surrounding plates along its edges, and so it creates trenches.

Reptilia
The saltwater crocodile
The saltwater crocodile can live in fresh water, salt water .If it is living in salty water, the kidneys and the crocodile's tongue get rid of salt. The “crock’s” eyes and nose are located high on the head. The crock has a broad tail and webbed feet for swimming, it feeds on almost any meat it can get. This reptile happens to be amphibious so it is technically both land and water.

Mammalia - Dolphin

Dolphins, not the one’s from MHS, have a streamlined body, adapted for fast swimming. Its basic color patterns are shades of grey with a light underside and a distinct dark cape on the back. It is often combined with lines and patches of different hue and contrast.
The head contains the melon, a round organ used for echolocation. Most dolphins have jaws that are elongated, forming a distinct beak. Some dolphin’s, like the Bottlenose, have a curved mouth which looks like a fixed smile. Dolphins teeth’s are up to two hundred and fifty in several its species. The dolphin’s brain is large and has a highly structured cortex, which often is discussed if they have an advanced intellect.
All dolphins don’t have hair which distinct them from other mammals except the only exception to this is the boto river dolphin, which does have some small hairs on the rostrum. Dolphin can be found at Susupe, Saipan right across the Civic Center (MHS).

Aves - Loon

Loons eat fish, amphibians, and crustaceans, which they hunt for under water, finding their prey by sight. This includes crayfish, frogs, snails, salamanders and leeches. They prefer clear lakes because it is easier to see prey. The loon's pointy bill is used to stab or grasp prey. Vertebrate prey is eaten head first to facilitate swallowing.
To help digestion, loons swallow small pebbles from the bottom of a lake Similar to grit eaten by chicken, these grastrolith may assist the loon's gizzard in crushing the hard parts of the loon's food (the exoskeleton of crustaceans and the bones of frogs and salamanders), as prey is swallowed whole.