Cu → cu2 2e– this equation represents

Explanation:

In a reduction-half reaction, there is gain of electrons.

For example,

Whereas in an oxidation-half reaction, there is loss of electrons.

For example,

Thus, we can conclude that the equation Cu → cu2 2e–  represents oxidation-half reaction.

oh it is true if thats what you are asking

b) mutualism

hope this : )