While out on a hike you encounter an acacia tree covered in ants. The ants seem to be nesting on the tree and attack other insects that try to graze on it. Based on your observations you can conclude that; The ants are parasites of the tree The tree is producing secondary compounds to defend itself The ants are commensalists and are having no effect on the tree The acacia is in a specialized mutualism with the ants and is a myrmecophyte

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A:

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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.