Look around. Some trees lose their leaves in winter. Trees that lose their leaves are called?
You are correct.
Hmmm... that's not right.
By shedding leaves, a deciduous tree can preserve the moisture in its branches and trunk, instead of drying out and dying.
A tree without leaves is in a state of dormancy.
It needs less energy to remain alive, and strong winds can move through the branches without making it topple over.