Answer:
Thanks won't tell them anything and neither anyone else
It is the producers. They make their own food and are food for the consumers to eat. Like us the, Humans.
<span>The pancreas secretes digestive enzymes in the slender instincts, these enzymes produce endocrine secretions through the hormones and pass through the blood. Endocrine cells called pancreatic islets secrete insulin and glucagon and have endocrine functions that are formed through the hormones and pass through the bloodstream.</span>
