Give the term for the formation and destruction of blood cells.

Explanation

To answer the question regarding the terms for the formation and destruction of blood cells, we can break it down into two parts:

### Step-by-Step Solution:

1. **Understanding Blood Cell Formation**:
- Blood cells are produced in the bone marrow through a process known as hematopoiesis.
- This process involves the differentiation of stem cells into various types of blood cells, including red blood cells, white blood cells, and platelets.

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