Two species live together and both benefit. What is this relationship called?
Answer and explanation
Correct answer: D. Mutualism
- Step 1: In mutualism, both species gain.
- Step 2: An example is a lichen or nitrogen-fixing bacteria in root nodules.
Answer
Mutualism.
Why not the others: Parasitism: one species benefits and the other is harmed. Competition: both species are harmed. Predation: one species eats the other.
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