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

Video transcript

Hello everyone. And in today's video we have to follow a problem. Moderate grazing is very helpful in the determination of and were given several bios that we need to identify where modern grazing is prevalent in. Now let me quickly remind you of what modern grazing is and it's a technique responsible for maintaining grassland ecosystems and the way that it does this is that it removes certain dominant species so that other species can prevail. It maintains the diversity of the grassland ecosystem by preventing certain species from becoming dominant. And so that is what modern grazing is. And so because of that, it is going to be very helpful in determining when a grassland ecosystem is present. And one way that we can remember this is the grassland and racing are very similar words. They start by the same prefix here. And so that is one way to remember it and that is going to be the final answer to her question. I really hope this video helped you.