Final answer:
Heterotrophic succession refers to ecological change influenced by heterotrophic organisms. An example is the growth of lichen on a rock, where the fungus and alga in lichen have a symbiotic relationship and contribute to soil formation.
Step-by-step explanation:
Heterotrophic succession refers to the process of ecological change in a community that is primarily influenced by the activities of heterotrophic organisms, which obtain their energy and nutrients from other organisms. In this case, growth of lichen on a rock is an example of heterotrophic succession. Lichen is a symbiotic association between a fungus and an alga, where the fungus provides a protected environment and the alga provides food through photosynthesis. Lichen can colonize bare rocks and break down the minerals, creating soil for the growth of other organisms.
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