What roles do non-living material play in the ecosystem?

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

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?