Answer:
Down (plumaceous), (insulation)
Tail (pennaceous), (flight)
Contour (plumaceous/pennaceous), (flight/insulation)
Bristle (pennaceous), (flight)
Filoplume (pennaceous), (flight)
Hope this helps! :)
large cells have more suface area so it will take the fluids and molecules entering a longer time. So they will have trouble moving needed materials in and waste products out. Hope this helped have a great day! :)
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Answer:
Whales = lungs
Clams = gills
Spiders = tracheal system
