CLOUDS HILL IMAGING LTD / SCIENCE PHOTO LIBRARY CLOUDS HILL IMAGING LTD / SCIENCE PHOTO LIBRARY
Autumn leaf skeleton. Zoom-in footage of the skeleton of an autumn leaf on a black background. When a leaf falls from a tree, it is cut off from the supply of water that kept it alive. It shrivels up and dries out, turning from a flexible structure to a brittle one. The leaf material will be broken down by bacteria and fungi to form a leaf mould, returning nutrients to the soil. As the leaf rots away, the skeletal structure of the leaf veins is exposed.
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