D. a warm front causes rain showers to occur over a particular area for several days
Chemical reaction, generally speaking. It's a vague definition, but it's easy to remember.
People have learnt to make shelters in a way so that they don't get affected by natural disasters that are common in their area. For example, people make houses of complete brick so they are stronger and can withstand a powerful storm
Thank you for the free 15 points .
