Why do leaves fall off of the trees in the fall?

Answer 1

trees drop their leaves as a way of keeping moisture in therefore to keep from drying out.this only happens to deciduous trees, it does not happen to evergreen trees though, their leaves stay on all year long keeps though dropping their leaves and instantly re-growing them in spring.

Answer 2

The lower temperatures and slower growth in the winter mean it is more costly for deciduous plants to maintain photosynthetic process than it is to discontinue them and produce new leaves in the spring.

Answer 3

Plants that grow outside the tropics shed their leaves in autumn because in winter the day length is short and the temperatures are cold to freezing. This would result in the amount of photosynthesis that their leaves can do being very small (the summer is warm and has long days). Further winter is a time of storms and high winds and when a tree is full of leaves a strong wind can blow it over. Thus a tree is safer without leaves in winter. Deciduous plants have therefore evolved a strategy of shedding their leaves for the winter season in autumn.

Answer 4

The leaves are no longer required for their purpose during the winter months so they are dropped and replaced in Spring.

Answer 5

They fall because there leave branch part breaks in the wind.

Answer 6

because the stems and leaves get heavy the natrul gravitational pull pulls it dow to the ground

Answer 7

wind