Based on the enthalpy changes given for the reactions, which reactions are endothermic? 2H2O → 2H2 + O2, ΔH = 484 kJ C + O2 → CO2, ΔH = -394 kJ H2 + Br2 → 2HBr, ΔH = -73 kJ 2NH3 → N2 + 3H2, ΔH = 92 kJ

Answer earth,water,fire and air;

The statement that most describes one way global winds affect weather and climate is a. polar easterlies move cool air to mid-latitudes. this is correct because the closer an area is to the equator the hotter it is, therefore if the polar winds are being moved towards the mid-latitudes it cools them down.