Answer:
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Answer:
Design Phase
Explanation:
In design phase developers make prototypes. The prototype is the solution without actual implementation. That prototype is shown to the user for the purpose of getting feedback. So design phase of SDLC involves making improvements based on user feedback.
Answer:
Natural systems are already in place while man made systems were created by humans manipulating things in some way.
Explanation:
man made: human created
natural systems: existed without interference