Answer:
I think
complex web of interactions among the species of the rain forest often involves insects, plants and primitive organisms such as fungi. Ants are especially likely to form various symbiotic relationships. For example, the leaf cutter ant has symbiotic relationships with fungi that they grow as food.
The coral reef ecosystem is a diverse collection of species that interact with each other and the physical environment. The sun is the initial source of energy for this ecosystem. Through photosynthesis, phytoplankton, algae, and other plants convert light energy into chemical energy
Bacteria create mutualistic relationships with the mangrove trees. The bacteria provide services such as N-fixation while the mangroves trees provide root exudates, stimulating microbial growth activity. Fungi show similar relationships with the mangrove tree