Periwinkles are often used to treat childhood leukemia and Hodgkin's disease. Rubber is a product of the rain forest. It comes from a rubber tree plant. These plants produce a sticky material called latex. Latex is used to make rubber.
All plants have seeds.
Seeds are spread throughout the rainforest by animals, wind, and water. Birds spread seeds when they eat the fruit. Animals spit the seeds out, the seed falls to the ground and a new plant begins to grow. Some seeds and nuts are eaten. There are many spices that come from the rainforest.