The highest level of organisation occurring on earth is ……..

Explanation

To determine the highest level of organization occurring on Earth, we can follow these steps:

1. **Understand Biological Levels of Organization**: Biological organization is a hierarchical structure that starts from the simplest unit of life and progresses to more complex forms.

2. **Identify the Levels**: The levels of biological organization are as follows:
- Organelle
- Cell
- Tissue
...