Question

a north american grassland is usually more productive when it contains diverse plant communities. how does the biodiversity of a north american grassland affect its sustainability? a. the biodiversity allows all plant communities to survive when the ecosystem experiences severe weather b. the biodiversity prevents all plant communities from surviving when the ecosystem experiences a heat - wave. c. the biodiversity prevents some plant communities from surviving when the ecosystem experiences consistent weather patterns. d. the biodiversity allows some plant communities to survive when the ecosystem experiences slightly different weather patterns.

Explanation:

Biodiversity provides resilience to ecosystems. In a North - American grassland, a diverse plant community means different species have different tolerances to weather variations. When there are weather changes, some species with appropriate adaptations can survive. Option A is incorrect as not all plant communities can survive severe weather even with biodiversity. Option B is wrong because biodiversity helps, not prevents, plant communities from surviving heat waves. Option C is incorrect as consistent weather patterns are not the main context for the role of biodiversity here; it's more about variable or extreme weather. Option D is correct as biodiversity allows some plant communities to survive when there are slightly different weather patterns due to the variety of species and their different adaptations.

Answer:

D. The biodiversity allows some plant communities to survive when the ecosystem experiences slightly different weather patterns