Answer: Sphincter muscles
Explanation:
The circular rings of smooth muscles, that can contract to regulate the movement of the smooth muscles that can contract to regulate the movement of food through the gastrointestinal tract are known as sphincter muscles.
These two layers are outer layer and inner layer. The outer layer is longitudinal and the inner layer is circular. They contract rhythmically to squeeze food.
Continental-volcanic is NOT a convergent boundary. The answer to your question is B. I hope this is the answer that you are looking for and it comes to your help.
Answer:
c. Cells contain tiny organisms within them.
Most of the carbon that's stored in plants - and in anything that eats them - is released back into the atmosphere by respiration when the organisms die and are eaten by microbes.
The answer is B
The macronucleus is the larger elipse-shaped nucleus and takes care of
functions like respiration and digestion. In contrast to this, the
smaller micronucleus is only involved in cell division or reproduction.
