Question

1. large brown organ to the right of the stomach that has many jobs, including making bile:
2. organ filled with white blood cells; filters blood:
3. fish - shaped organ behind the stomach that makes many kinds of enzymes needed for digestion:
4. exchange of oxygen and carbon dioxide between the body and the air around it:
5. sheet of muscle beneath the lungs and above the abdomen that contracts and relaxes to help the chest expand so a person can inhale or shrink so a person can exhale:
6. blood vessels that carry oxygen - rich blood:
7. master gland of the body, which releases hormones to control other endocrine organs:
8. substance produced in the thyroid that increases the rate at which the body uses energy:
9. finger - shaped organ attached to the large intestine; made of lymphatic tissue:

Explanation:

19.

The large brown organ to the right of the stomach that makes bile is the liver. In human anatomy (a subfield of Biology, which is part of Natural Science), the liver has multiple functions including bile production, detoxification, etc.

The organ filled with white blood cells and responsible for filtering blood is the spleen. In the study of the lymphatic and circulatory systems (within Biology), the spleen plays a role in immune response and blood filtration.

The fish - shaped organ behind the stomach that produces digestive enzymes is the pancreas. In the context of human digestive system (a part of Biology), the pancreas secretes enzymes like amylase, lipase, etc. for digestion.

Answer:

Liver

20.