Aspecies becoming dependent on another species is rapid evolution instantaneous speciation co-adaptation sympatric speciation

The given blank can be filled with co-adaptation.

Explanation:

Co-adaptation refers to the procedure in biology by which two or more genes, species, or phenotypic traits go through adaptation as a group or pair. This takes place when two or more inter-associating features go through natural selection in combination in response to the similar selective pressure or when selective pressures change one feature and at the same time change the interactive feature.