Explanation:

- Ecosystem goods: These are tangible products like food, water, and raw materials. While their loss is significant, it is not the major concern compared to services.

- Ecosystem services: These include benefits such as clean air, water purification, pollination, and climate regulation. These services are crucial for human survival and quality of life. Their degradation represents a significant loss to humanity.

- Correct Answer

- Ecosystem-based tourism: This can generate revenue and improve livelihoods but is not as vital as the other options.

- Ecosystem-dependent tribes: Their loss impacts cultural diversity and knowledge, but globally, ecosystem services have broader implications.