This structure is called the epiglottis. This flexible leaf-shaped cartilage serves as a flap that covers the larynx to prevent food and liquids from entering the airway and the lungs. It is open when we breathe which allows air to enter into the larynx.
1.The presence of valves 2.the milking action of skeletal muscles 3. the veins as the muscles contract
The group that includes gorillas, chimpanzees, bonobos, and humans is called the ⇒ hominoids.
The group that includes humans and their direct ancestors is called the ⇒ hominids.
Answer:
Maybe this helps! Atoms come together to form molecules because of their electrons. Electrons can join (or bond) atoms together in two main ways. When two atoms share electrons between them, they are locked together (bonded) by that sharing. These are called covalent bonds.
