People have always tried to make their life safe and comfortable — and that has always been the main reason for ____(TECHNOLOGY) progress. However, even the most ___ (IMPRESS) of our achievements cannot compare with the wonders created by nature. Wise nature equips all the creatures with appropriate instruments — wings, fins, teeth, sharp vision and hearing. Animals, fish and birds have a wonderful sense of ____(DIRECT) and the ability to sense ___(DANGER) situations. People seem to be the most ____(HELP) of all living beings but they were given brains as a _______(POWER) tool for survival and development.