The document discusses climate change and its causes and impacts. It begins by defining weather and climate, then states that the planet is getting warmer due to the greenhouse effect trapping heat. It suggests this warming is being caused by human activities that release greenhouse gases like carbon dioxide and methane from the burning of fossil fuels and cement production. This climate change is impacting various species by altering habitats and food sources. Differences between weather and climate are provided, and examples are given of how climate change alters weather patterns and affects biotic and abiotic systems like precipitation levels and human events.