Two factors which cause global climate change are listed below. factor 1: mountain building. factor 2: changes in the amount of atmospheric gases. which of these statements is correct about the two factors which cause global climate change? a. factor 2 is a natural factor and factor 1 is influenced only by human factors. b. factor 1 is a natural factor and factor 2 is influenced only by human factors. c. factor 1 is a natural factor and factor 2 may be influenced by both nature and human factors. d. factor 1 is a human induced factor and factor 2 may be influenced by both nature and human factors.