<span>They should check their facts and exchange questions with each other.
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Answer:
not sure if this helps but. 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
Answer:
True
Explanation:
Your body breathes in oxygen and breathes out carbon dioxide