The Mfp factor is present in meat, fish, and poultry that enhances the absorption of non-heme iron that's in the same foods or in other foods eaten at the same time.
Answer:
Tubules?
Explanation
The trachea, spiracle, and air sac are part of their respiratory system, Howeber, the tubules are what take away the carbon dioxide from their system. Im not sure if they produce the carbon dioixde. But they are a part of what removes the carbon-dioxide from their body.
D. The heat is there via convection from the sun