The option that would most quickly cause the collapse of an ecosystem would be option A. a decrease in producers.
An ecosystem's stability requires a delicate balance of its members. These members may be classified as:
- Producers
- Primary consumers
- Secondary consumers
- Tertiary consumers
each of which feeds on the members of the group before it.
Producers are perhaps the most important in the entire ecosystem. Producers are plants or bacteria that use photosynthesis to create nutrients. A decrease in the number of producers would cause primary consumers to decrease due to the absence of a food supply. This would then lead to a domino effect and the quick and complete collapse of the ecosystem.
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