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.
The uterus relaxes is muscles after being stretched open. When the baby is about to be pushed out, the uterus contracts many times until the baby is out of the female's body.
False because extrusive rocks have fine-grained texture due to the rapid cooling of magna above the earth surface. On the other hand extrusive rocks have course grained texture due to slow cooling of magna beneath the Earth's surface
If a person is "sterile", this means that they cannot reproduce. The word "sterilized" is essentially stating that there is no productive activity in order to be able to reproduce.
Black hole
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