Have you ever wondered why some trees shed their leaves during the winter? This occurs for many reasons, but the main reasons trees do this is to protect themselves. You know, most trees that lose their leaves are in cold climates. During the long cold winters, the air becomes very dry. This causes the leaves of trees also to become dry. To keep the leaves alive, the trees have to give them a lot of moisture. The problem with this is that trees could lose too much moisture and die. So instead of giving moisture to the leaves, the trees keep the moisture inside. They keep it in their trunks and branches. After a while, the leaves start to die. As the leaves die, they fall to the ground around the trees. When this happens, the leaves actually help the trees survive. How you may ask? Well, the leaves form the protective layer around the roots of the trees. This allows the roots to stay warm. So, by losing their leaves the trees are able to live through the winter.

Using points and examples from the talk, explain why trees shed their leaves.

Preparation time: 20 seconds l Response time: 60 seconds

The lecture mainly discusses why trees shed leaves during winter. According to the speaker, trees do this to protect themselves. During the winter, trees use a lot of moisture to keep their leaves alive. If the trees lose too much moisture, they can die. So they keep their moisture inside their trunks and branches. This causes leaves to die. As they fall to the ground, they form a protective layer over the roots of the trees. Together, these factors allow the trees to survive through a long, cold winter.