2. Consider a population of mycorrhizal fungi, all with equal access to a single tree. When all of the fungi invest equally in the tree, each fungi's growth rate (g) is proportional to its investment (z), like g(z) = az However, if a single (or small fraction of the total) fungi instead invests y, the rare individual(s) growth is instead g(y) = y(a + z-y) What is the evolutionarily stable strategy for the fungal investment in the tree?

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Soil Ecosystem

Soil provides a habitat or living environment for a large number of different species of organisms as well as plants. It provides all the essential nutrients and minerals for plants to grow. All these together form the soil ecosystem.