In climate action: causes resulting from human activities or produced by human beings [Section 3(c), Climate Change Act of 2009, as amended by Republic Act No. 10174; Section 1(c), Climate Change Commission Resolution No. 3, Revised Implementing Rules and Regulations (R-IRR) of Republic Act No. 9729, Otherwise Known as the Climate Change Act of 2009, As Amended By Republic Act No. 10174]