Describes the purpose and organization of the judicial branch.

The judicial branch decides the constitutionality of federal laws and resolves other disputes about federal laws. However, judges depend on our government's executive branch to enforce court decisions. Courts decide what really happened and what should be done about it.

Explanation:

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worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)