List the specific symptoms of amoebiasis. Name the causative organism

Explanation

### Step-by-Step Solution:

1. **Understanding Amoebiasis**:
- Amoebiasis is a parasitic infection that primarily affects the intestines.

2. **Identifying the Causative Organism**:
- The organism responsible for causing amoebiasis is a protozoan known as **Entamoeba histolytica**.

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