The pancreas is an organ in the digestive and endocrine systems. It produces digestive enzymes for breaking down food in the small intestine and releases insulin and glucagon to regulate blood sugar.
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Ozone is a molecule composed of three oxygen atoms. It forms a protective layer in Earth’s stratosphere, blocking harmful ultraviolet radiation. Ground-level ozone is a component of smog and can be harmful to health.
Herbivores are animals that primarily consume plants, while carnivores are meat-eating animals that primarily feed on other animals. Their dietary preferences are adapted to the types of food they consume.
The small intestine is a vital organ in digestion, where nutrients from food are absorbed into the bloodstream. It consists of the duodenum, jejunum, and ileum, playing a key role in nutrient absorption.
Veins are blood vessels that carry deoxygenated blood back to the heart. They have thinner walls than arteries and often contain valves to prevent blood from flowing backward.