Answer:
I think the cardinal is trying to communicate courtship for the first and third song, while it is trying to communicate territorial with the second song.
Explanation:
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Yes, they must pass through a membrane proteins in a process called facilitated diffusion.
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<span>pulmonary - lungs -- circulatory helps transport as well.
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Tropical rainforests are rich habitats for many species of animals because there are many resources available. There is a lot of water available and a lot of plants. <span> it offers lots of niches for different species. The trees are kind of like skyscrapers, with different species living at different levels and at each level there is a range of species with certain adaptations to allow them to thrive.</span>
