8 Organelle
5 Organism
6 Tissues
7 Cell
9 Atom
2 Ecosystem
6 Organ system
1 Biosphere
3 Community
4 Population
Explanation:
organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.
Atoms
Molecule Groups of atoms
Biomolecular complex Groups of (bio)molecules
Sub-cellular level Organelle Functional groups of biomolecules, biochemical reactions and interactions
Cellular level Cell Basic unit of all life and the grouping of organelles
Super-cellular level
(Multicellular level) Tissue Functional groups of cells
Organ Functional groups of tissues
Organ system Functional groups of organs
Ecological levels Organism The basic living system, a functional grouping of the lower-level components, including at least one cell
Population Groups of organisms of the same species
Community
(or biocoenosis) Interspecific groups of interacting populations
Ecosystem Groups of organisms from all biological domains in conjunction with the physical (abiotic) environment
Biome Continental scale (climatically and geographically contiguous areas with similar climatic conditions) grouping of ecosystems.
Biosphere or
Ecosphere
