In a temperate forest ecosystem, biologists monitor the interactions between several co-occurring species. The diagram below summarizes three distinct interspecific interactions, where the signs (+)(+)(+), (−)(-)(−), and (0)(0)(0) denote positive, negative, and neutral effects on the fitness of each organism, respectively.
Which option correctly classifies these three relationships in order?
1: Commensalism; 2: Mutualism; 3: Parasitism
1: Mutualism; 2: Commensalism; 3: Parasitism
1: Mutualism; 2: Commensalism; 3: Predation
1: Mutualism; 2: Amensalism; 3: Parasitism