Final answer:
If one type of organism described in the passage were removed from an ecosystem, there would be a decrease in biodiversity affecting the balance of the ecosystem(option a).
Step-by-step explanation:
If one type of organism described in the passage were removed from an ecosystem, there would be a decrease in biodiversity affecting the balance of the ecosystem. The passage explains that high biodiversity makes ecosystems more stable, and the loss of just one species can have a "domino" effect, resulting in the extinction of other species and greatly affecting the stability of the whole ecosystem.
Therefore, option a) There will be a decrease in biodiversity affecting the balance of the ecosystem, is the correct answer.