Question
Study the table showing the population interaction between species Z and Y respectively. Assign the appropriate +/- signs for A, B, D, E and respective interactions for C and F.
Species 'Z' Species 'Y' Name of Interaction
A B Mutualism
- - C
D E Parasitism
+ O F

Answer

A = +
B = +
C = Competition
D = +
E = -
F = Commensalism

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