Question

when might an increase in biodiversity lead to a decrease in the stability of an ecosystem?

Explanation:

When invasive species are introduced, they can out - compete native species. This addition of new species (increase in biodiversity in a sense, as there are more species present) disrupts the existing ecological balance. Invasive species often lack natural predators in the new ecosystem, so their population can grow rapidly. They may consume resources (like food, water, space) at a higher rate than native species, leading to a decline in native populations. This imbalance can cause a decrease in the overall stability of the ecosystem as the normal food webs, nutrient cycling, and other ecological processes are disrupted.

Answer:

When invasive species are added to an ecosystem.