Final answer:
The principal benefit of plant cultivation for human populations is that it satisfies human food and fiber needs, enhances environmental quality, and maintains the natural resource base that the agricultural economy depends on.
Step-by-step explanation:
The principal benefit of plant cultivation for human populations is that it satisfies human food and fiber needs, enhances environmental quality, and maintains the natural resource base that the agricultural economy depends on.
Plant cultivation provides food and fiber, which are essential for the survival and well-being of human populations. It also helps maintain the balance of ecosystems and supports biodiversity by enhancing environmental quality and conserving natural resources.
Furthermore, sustainable plant cultivation methods can contribute to economic growth, uplift vulnerable populations, and help address challenges such as climate change.