Fill in the blanks. 1. live on the blood or tissue of other organisms.2. The type of teeth seen in. are usually broad and flat.3. Some animals have specialized cells that absorb food, break it downinternally, and pass the nutrients to other cells in a process called .4. have some tissues, such as cell walls, which require special structureslike rumen to break down in the digestive system.5. Gas exchange involves the absorption of into the bloodstream and therelease of COy waste.6. Aquatic animals have specialized structures called that allow foroxygen to be absorbed into the bloodstream directly from water as it passesthrough.7. Insects typically have circulatory systems.8. Ammonia must be converted into urea in the to be excreted later inmammals as urine.
