Cells use oxygen to assist in cellular respiration. This type of respiration, called aerobic cellular respiration, converts stored energy into a usable form. The first stage of aerobic cellular respiration, glycolysis, can be performed without oxygen.
A persuasive speech is a specific type of speech in which the speaker has a goal of convincing the audience to accept his or her point of view. The speech is arranged in such a way as to hopefully cause the audience to accept all or part of the expressed view.
However, this is not a nuanced enough definition to capture the actual goals of different persuasive speeches. Persuasive speeches can be designed to convince, actuate, and/or stimulate the audience. Convincing. A convincing speech is designed to cause the audience to internalize and believe a viewpoint that they did not previously hold.