Which best describes the function of the part labeled b?

According to this food web which of the following would be considered primary consumers

What is the importance of having the us forest service, the bureau of land management, the us fish and wildlife service, and the national park service? to manage land resources for conservation and the development of natural resources to manage land resources for conservation and the development of urban areas to preserve historical landmarks and manage the development of urban areas to preserve historical landmarks and manage the development of rural areas

What molecule does hemoglobin decay into over time