These incomplete cartilaginous rings prevent the trachea from collapsing
Answer:
4. draw a valid conclusion for that experiment
Explanation:
Answer:
less chance of rejection from the body and already the perfect match
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Answer:
Explanation:
Protozoa make humans sick when they become human parasites. Trypanosoma protozoa cause Chagas disease and sleeping sickness. Giardia protozoa cause giardiasis, and Plasmodium protozoa cause malaria.