Which of the following could qualify as a top-down control on a grassland community?
A. limitation of plant biomass by rainfall amount
B. influence of temperature on competition among plants
C. influence of soil nutrients on the abundance of grasses versus wildflowers
D. effect of grazing intensity by bison on plant species diversity
Answer:D
Which of the following could qualify as a top-down control on a grassland community?
A. limitation of plant biomass by rainfall amount B. influence of temperature on competition among plants C. influence of soil nutrients on the abundance of grasses versus wildflowers D. effect of grazing intensity by bison on plant species diversity