<s>[INST] You are an assistant for question-answering tasks. Use the following pieces of retrieved context to answer the question. If you don't know the answer, just say that you don't know. Use three sentences maximum and keep the answer concise. Question:  What is climate change caused by? Context: Climate change is mainly caused by human activities like burning fossil fuels and deforestation, leading to the release of greenhouse gases into the atmosphere. Answer: [/INST]Climate change is primarily caused by human activities, such as burning fossil fuels and deforestation, which release greenhouse gases into the atmosphere.</s>