The least dense layer of the atmosphere is the exosphere as it is the outer most layer of the atmosphere. Hope it helps!
Digestion begins in the mouth with chewing and ends in the small intestine. As food passes through the GI tract, it mixes with digestive juices, causing large molecules of food to break down into smaller molecules. ...Digestive juices contain enzymes that break food down into different nutrients.
They breathe through their lungs while moving their throat or rib cage. Some reptiles can hold their breath for hours by simply not moving.
Hi There!
Question:
Which statements indicate what the fossil record suggests about evolution on Earth? Check all that apply.
Answer:
Organisms originally lived only in Earth’s water.
Plants did not have flowers when dinosaurs existed.
Why:
Plants existed when dinosaurs did but they didn't have any flowers, because flowers came along way after plants existed. When earth was form you see that it says earliest waters so that would have meant the first organism brought to earth were organisms that lived in the water.
Hope This Helps :)
Most likely the Muscular System.
Muscles, ligament, tendons and bone all function to move the body. And organs inside the body depend on muscles as well; such as the heart, diaphragm, etc..
:) I hope this was one of your answers :) good luck!