The activities that are essential for living organisms are called ___________.

Explanation

**Step-by-Step Text Solution:**

1. **Understanding the Question**: The question asks for a term that describes the activities essential for living organisms.

2. **Identifying the Term**: The correct term that fits this description is "life processes."

3. **Defining Life Processes**: Life processes are the essential activities that organisms perform to maintain their health and ensure survival.

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