The epiglottis is a flap in the back of your tongue that prevents food from entering the larynx. When your mouth is closed, the epiglottis is in place and blocks the larynx opening. If your mouth is open, the flap lifts and the larynx is no longer blocked so you can breathe. This is why it's important to not chew with your mouth open... if you do, then food can go down the larynx by mistake.
Answer:
B. separating strands of DNA
Transparent materials allow light to pass through freely. translucent lets light pass through, but after the light is scattered.
Human have an animal cells.
It count as an animal cells.
