Answer:
Biogas is composed mostly of methane (CH4), the same compound in natural gas, and carbon dioxide (CO2).
Explanation:
Answer: option B) Secretin
Explanation:
Secretin is an enzyme formed by the upper intestinal layer and gets transported by blood to the PANCREAS which it stimulates: causing the flow of pancreatic juice, also the flow of bile and intestinal juice but to a lesser extent.
Alongside Gastrin, Secretin is one of the hormones of the Gastrointestinal tract; but their functions differ
Therefore, Secretin is the answer
I am pretty sure that 76 meters is the answer.