Flowering plants, shrubs and trees provide the environment with much needed oxygen and fight soil erosion. They also provide food and shelter for many animals, as well as contribute to the fertility of soil with their dead leaves and flowers.
How tall can a tree grow?
For Jack and his beanstalk, the sky was the limit, but nature's giants hit a point at which they can't grow any taller. What prevents lofty trees like sequoias from soaring any higher?