D through a microscope!
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Answer: Option C
Secretion hormone stimulates the release of pancreatic fluid.
Explanation:
Secretion is a digestive hormone secreted by the duodenum(upper part of small intestine) that stimulates the release pancreas fluid and regulates the water homeostasis thought out the body and around duodenum. Its also regulates pancreas, liver and stomach secretions.
It is C sensory or D not quite sure.
Answer:
More oxygen is needed to produce more energy, and more carbon dioxide waste must be removed from the body.
Explanation: