I am pretty confident in my major now

The opposite of biodiversity is referred to as monoculture. Monoculture is the existence of one species, excluding the rest, like a well maintained lawn, or a field of potatoes. There is a process in nature called succession, this process over generations increases diversity. Biodiversity is what is found in nature, it is stable. Monoculture is man made, it is prone to collapse. A diverse community contains many different species acting on each level of the energy pyramid. For example the base, the producers contain many species of grass, trees, bushes, and shrubs. There is a food web in a diverse community. Monoculture on the other hand only has a single species on each level of the pyramid; one producer, one consumer on each consumer level. A non diverse community has a food chain. The food chain is not stable, lets say the producer is grass, the level one consumer is a rabbit, on level two a bear, top of the pyramid for kicks lets put humans. Lets say the rabbit catches a disease and begins to die off. The grass grows unchecked and depletes its resources the soil loses nutrients and can not support life, the bear starve, and their starvation leaves humans without food, human kind dwindles, becomes extinct, life ends. In a food chain however the rabbits die, the bear eats berries, salmon, deer. The grass is eaten by deer and elk, life remains. This is High school level knowledge, whats my point? Biodiversity is shrinking, the lower the number of species the smaller the chance for life to continue on earth. Human beings continue to chop down rain forests to start monocultures of wheat, over fish species to extinction, and plow over grassland to create monocultures of themselves. If this continues unchecked life will cease to exist. The earths natural cycle calls for a dramatic change in temperature to purify the atmosphere, to keep homeostasis in check, to continue to be able to support life. The catch is that only a very diverse ecosystem will be able to survive.