Answer:
The mass of a proton in scientific notation, is 1.67×10-27kg.
Explanation:
The mesenteric veins and the hepatic portal vein
Answer:
Metabolism refers to all the chemical reactions in the body, including those that use oxygen and create carbon dioxide. Oxygen and carbon dioxide, therefore, are involved in both respiration and metabolism. Metabolic reactions are sometimes referred to as cellular respiration, which can cause confusion.