B.)
Weathered rock
I hope this helped
Answer:
C.
It is able to regulate the flow of the calcium oxide and water into the food to make it warm.
Explanation:
Answer: they have to maintain homeostasis, so they remove waste to do so..
As food reaches the end of the esophagus, it enters the stomach through a muscular valve called the lower esophageal sphincter. The stomach secretes acid and enzymes that digest food. Ridges of muscle tissue called rugae line the stomach. The stomach muscles contract periodically, churning food to enhance digestion.Mar 4, 2016
A energy barrier must be overcome.
