Question

Answer me please ... question 18.

Answer 1

algae gives food and fungi provide shelter and water together they are know as lichens..

Answer 2

Such association is called symbiotic relationship

Symbiotic relationships are a special type of interaction between species. Sometimes beneficial, sometimes harmful, these relationships are essential to many organisms and ecosystems, and they provide a balance that can only be achieved by working together.

For example: Lichens

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