Lahars are different from pyroclastic flows because: Group of answer choices Lahars are mixtures of debris and air, whereas pyroclastic flows are a liquid mixture of lahar debris. Pyroclastic flows are found mainly at volcanoes that are covered with snow and ice. Pyroclastic flows are mixtures of debris and hot gas, whereas a lahar is a fast, liquid flow. Pyroclastic flows are always basaltic, whereas a lahar is always felsic