Sustainability is the capacity to endure. In ecology the word describes how biological systems remain diverse and productive over time. Long-lived and healthy wetlands and forests are examples of sustainable biological systems. For humans, sustainability...
Military tactics, the science and art of organizing a military force, are the techniques for using weapons or military units in combination for engaging and defeating an enemy in battle. Changes in philosophy and technology...
Waste management is the collection, transport, processing or disposal, managing and monitoring of waste materials. The term usually relates to materials produced by human activity, and the process is generally undertaken to reduce their effect...
A frequent-flyer program (FFP) is a loyalty program offered by many airlines. Typically, airline customers enrolled in the program accumulate frequent-flyer miles (kilometers, points, segments) corresponding to the distance flown on that airline or its...
In sociology or anthropology, social status is the honor or prestige attached to one's position in society. It may also refer to a rank or position that one holds in a group, for example son...
American Express Company, also known as AmEx, is an American multinational financial services corporation headquartered in Three World Financial Center, Manhattan, New York City, New York, United States. Founded in 1850, it is one of...
An aircraft is a machine that is able to fly by gaining support from the air, or, in general, the atmosphere of a planet. It counters the force of gravity by using either static lift...
Travel is the movement of people or objects between relatively distant geographical locations....
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