Question

write the numbers next to the ecological levels of organization from smallest to largest.

1. ecosystem
2. population
3. organ
4. cell
5. organism
6. community
7. organ system
8. tissue
9. biosphere

Explanation:

The cell is the basic unit of life. Tissues are groups of similar cells. Organs are made up of different tissues. Organ - systems are composed of organs. An organism is a living individual. A population is a group of the same species. A community is all populations in an area. An ecosystem includes a community and its physical environment. The biosphere is the global sum of all ecosystems.

Answer:

1. Cell
2. Tissue
3. Organ
4. Organ System
5. Organism
6. Population
7. Community
8. Ecosystem
9. Biosphere