It starts in the mouth. You start to chew in which the glands that produce saliva make it easier to send down the esophagus
Yes. Oxygen crash led to Cambrian mass extinction
Answer:
well animals have better feeling in tempeture
Explanation:
so basically if you have a fish in a bag in a hot tank and we cant feel it its because some things need to actually get hot enough or cold enough forus to feel the tempeture so basically animals have better feeling for the heat or the cold than humans
Answer:
A. Organ.
Explanation:
Cells make up
tissues, tissues make up an organ. Organs make organ system
