It's a way of protecting the trees, and making sure they survive the winter and beyond. Leaves die during the winter months. If those dead leaves stayed on the trees, and new ones wouldn't grow in their place, the tree would have no way of making food for themselves.
Hope it helps. ☺
Answer:
I believe the answer is Dissolved Oxygen.
Explanation:
Dissolved oxygen (DO) is the amount of oxygen that is present in water.
A major result of the bank failures that followed the stock market crash in 1929 was that "<span>There wasn't enough money in circulation to support a healthy economy," since people had completely lost faith in the banking system.</span>