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What Is Injector tree? What Is Injector bubbling?

What Is Injector tree?
In the Dependency Injection guide, you learned how to configure a dependency injector and how to retrieve dependencies where you need them.

An application may have multiple injectors. An Angular application is a tree of components. Each component instance has its own injector. The tree of components parallels the tree of injectors.

Three level component tree – 

What Is Injector bubbling?


Explore in detail by using below questions -
1.      What Is an entryComponents?
2.      What Are @Injectable providers?
3.      What Is Dependency Injection (DI)?

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