Measuring its costs and benefits in terms of energy spent and/or gained, which interaction(s) involve(s) one individual gaining and one individual losing?
A)competition
B)predation
C)obligate mutalism
D)facultative mutalism
E)commensalism

Question

Quizplus · Accepted Answer

Predation involves one individual (the predator) gaining energy by consuming another individual (the prey), who loses energy (and its life). This interaction is characterized by one individual benefiting at the direct expense of another.

Measuring Its Costs and Benefits in Terms of Energy Spent