It is behaving unselfishly to enhance the welfare of others. For example: studies show that blue whales often exhibit altruistic behavior; putting themselves in danger to defend the lives of other creatures (even creatures outside of their species) when they are being attacked, or in trouble.
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If you are not paying for the product ,you are the product means: you doesnt need paying for a product,your information is product(money).
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The answer is William Tecumseh Sherman Hope this Helps!
Answer:Concept development is a set of activities that are carried out early in the systems engineering life cycle to collect and prioritize operational needs and challenges
Explanation: Concept development is a set of activities that are carried out early in the systems engineering life cycle to collect and prioritize operational needs and challenges, develop alternative concepts to meet the needs, and select a preferred one as the basis for subsequent system or capability development and implementation