Biology, 28.06.2019 02:50 breann6

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 e) effect of humidity on plant growth rates

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The effect of grazing intensity by bison on plant species diversity could qualify as a top-down control on a grassland community (Option D).

The top-down control refers to the biological phenomenon where populations at higher trophic levels regulate the population size of organisms in lower trophic levels.The top-down control is also known as a predator-driven system, which means that predators control the trophic chain.In consequence, in a top-down control model, the interaction between a top predator and their prey regulates the size of the populations in lower trophic levels.Conversely, in a bottom-up control model, the control is driven by the producers present in the ecosystem.

In conclusion, the effect of grazing intensity by bison on plant species diversity could qualify as a top-down control on a grassland community (Option D).

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Answer from: cloey6544

According to the top down control, each trophic level is controlled by the very next trophic level. It says that predators control the population of prey.

Therefor the correct answer is D

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Answer from: Quest

glacial erosion, the picking up and movement of earth beneath a glacier, is also referred to as plucking. erosion and transportation of individual pieces of bedrock, especially large "joint block occur as a result of this glacial erosion. plucking is type of erosion in which rocks become frozen into the bottom and sides of the glacier.as the glacier moves downhill it 'plucks' the rocks frozen into the glacier from the ground.

Answer from: Quest

Iam not sure but to me it with be a or dsorry if i was late! hope this ! : )if you really want me to find out the answer that is correct tell me and i will do more research but the a or d makes sense to me.

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Which of the following could qualify as a top-down control on a grassland community? a) limitation...

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