Changes in stool color alone do not cause symptoms. The underlying cause of the change in stool color, texture, or form is responsible for any symptoms. Bowel movements are usually light to dark brown in color, and there is moderate variation among individuals with respect to stool color, quantity and form.
Plants in the Twilight Zone As the amount of light decreases, the size and complexity of plant life also decreases. So whereas there may be flowering plants growing in the entrance zone, the twilight zone is typically marked by mosses and ferns.
Several meters below the bottom of the canopy is the understory, a layer made up of young trees, short species of trees, shrubs, and soft-stemmed plants. The understory varies a lot from rainforest to rainforest.But everywhere it is darker, there is less wind, and it is more humid than the canopy above it.Many familiar houseplants are native to his part of the rainforest (philodendrons, zebra plants, and prayer plants, for example).nderstory plants have to find ways to advertise their flowers, so that the animals and insects that carry their pollen, can find them in the dim light. Often these flowers are large and pale so they can be easily seen.