The pyloric valve control food movement from the stomach into the small intestine.
Answer:
I think it's the first and the second ... but I'm not sure
Answer: It is because it makes it more efficient to study organisms.
Explanation: Biologist classify organisms by considering similarities between them. The organisms which have closely related characteristics are placed in a separate domains by biologists. Domains are further divided into 6 Kingdoms. According to modern classification system, domain is largest unit of biological classification.
The answer is D, all of the above.
A cell that consists of 3 types the cell membrane,the nucleus,and between the two,the cytoplasm within the cytoplasm lie intricate arrangements of fine fibers.