Originally, it was Global Warming. Quickly, scientists, statisticians, and weather men challenged this claim. So, they went to global cooling. Then, more challenges were made in the context of centuries rather than decades. So, the promoters went to the extremely vague "climate change."
Because it is so vague, it is all-encompassing. Anything that fails to preserve the current climate creates change. So, the answer to your question is, "Every human activity changes the climate." Breathing, showering, switching on a light... all of it affects the climate.
However, I believe the change in weather is to be blamed not on physical activities, but rather on spiritual failures: lascivious, greedy living, for example. Jeremiah shared this bit he heard from God: The birds of the air and the fish of the sea are disappearing because of the sin of man.