The highest level of organization a sponge has are Cells.
organism
thoracic cavity
thoracic cavity
systems
cells, tissues, organs, organ systems, and organism.
The highest level of organization that ecologists study is the entire biosphere itself.
organism
The Biosphere!!
organism
Organisms
The highest level of organization that ecologists study is the entire biosphere itself.
thoracic cavity
thoracic cavity
organ.
thoracic cavity
systems
biosphere.