Explain Kotlin Coroutines and Suspending Functions

Explain your understanding of Kotlin coroutines and the suspend modifier in an Android application. Distinguish suspension from blocking, concurrency from sequential execution, and a coroutine's lifetime from the lifetime of a thread. ### What a Strong Answer Covers Explain what suspend permits, what it does not automatically do, how builders and dispatchers affect execution, and how structured concurrency helps tie work to an appropriate owner. ### Follow-up Questions - Does marking a function suspend make a blocking network call safe on the main thread? - Do two consecutive suspending calls run concurrently by default? - How would you prevent a completed background operation from updating a screen that is no longer relevant?