Understanding Author's Purpose in a Passage

In the depths of the Amazon rainforest, countless species of plants and animals thrive in a delicate balance. This vibrant ecosystem is crucial not only for the planet's climate but also for the biodiversity it supports. Scientists emphasize the importance of preserving such habitats, as they hold the key to understanding complex biological processes and may even provide cures for diseases. If these ecosystems are destroyed, the world may lose valuable resources and unique species forever.