Direct Impact: Producers are affected first because they depend directly on as a raw material for photosynthesis. Immediate Cessation: Without , plants cannot manufacture food, leading to an immediate halt in biomass production. Trophic Collapse: While consumers would eventually starve, they are affected only after the producers fail. Ecosystem Foundation: As the base of the food chain, the disappearance of producers would lead to the total collapse of the biosphere.

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