I believe the sunbird would benefit the plant because it would pollinate them. Going from flower to flower, pollen would get stuck on it's feathers and it would pollinate other flowers, like a bee.
Around what time that they became extinct. They measure the amount of decay on the bone, and it gives them pretty accurate info
Lipids provide long term energy storage
The role is that it helps you with the urinal system and makes the things in your body go out of the body. (hopes it at least helped a little! (=^T^=)