This document discusses non-human participants, which are natural phenomena that occur without human involvement, such as landslides, tsunamis, and floods. It provides characteristics of texts involving non-human participants, such as consisting of general statements, causal sequences, and interpretations, and containing factual, scientific information. The purposes of non-human participant texts are to provide information to answer public questions and to educate readers. There are three main types: sequential, detailing stages of events; causal, detailing causes of changes; and factorial and consequential, explaining effects and outcomes of processes. Language rules for non-human participant texts focus on general, non-human things, allow scientific terms, use material and