How does a rubber tree overcome the problem of overcrowding?

Rubber trees overcome the problem of overcrowding by producing a chemical compound called allelopathy. This compound inhibits the growth of surrounding plants, reducing competition for resources such as water, nutrients, and sunlight. Additionally, rubber trees have a deep and extensive root system that allows them to access water and nutrients from a larger area, further outcompeting neighboring plants. Lastly, rubber trees have a dense canopy that shades out smaller plants, limiting their growth and survival in the immediate vicinity.