When two variables are related in such a way that when one increases, the other decreases, you can conclude that?

Ahumid tropical climate brings rain in the summer and drier weather in the winter to the malay archipelago.

Atreatment for stuttering in which the person is asked to speak in a singsong fashion, usually with the aid of a metronome is

Are people more motivated to change from positive or negative experiences, like slavery, womens rights, and any other historical movements/moments? i need more factual information than opinions.