yes
Yes. Every tree gives oxygen.
Yes, it is normal. The tree is decidious, meaning it loses its leaves.Please see related link below.
Is Epsom salt good for Tibichina Tree with a lot of flowers but drooping leaves?
The willow tree leaves do work just as good as the bark to make Aspirin. The leaves and bark are often combined to make medicine.
No. But if the tree needs pruning you should have that done at your expense as a gesture of being a good neighbor. If it is normal leaf-fall, the homeowner is responsible for their own maintenance.
A good shade tree that does not shed leaves is the live oak tree. Live oaks are evergreen trees that provide a dense canopy and shade year-round without dropping their leaves. They are also drought-tolerant and can adapt well to various soil types.
Yes, the leaves are good for composting, and so are the limbs (preferably WITH bark) if you will grind them up.
Yes, trees are full of chloroplasts in their leaves.
A Tulip Tree has the largest leaves.
Oak tree leaves do not eat.
It is not a good idea to plant any deciuous tree near a pool as the leaves foul the water when they drop.
The tree that has pink leaves is called the Pink Tabebuia tree.