Which level of organization encompasses all of the others
The level of organization that encompasses all others in biological sciences is the biosphere. The biosphere includes all living organisms and their interactions with each other and with the physical environment.
To determine this answer, you can think of the levels of organization in biology, which are hierarchical in nature. They start from the smallest unit, which is the atom, and progress to molecules, organelles, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystems, and finally the biosphere.
By considering the definitions of each level, you can conclude that the biosphere encompasses all the other levels. The biosphere refers to the sum of all ecosystems on Earth, where ecosystems consist of communities of organisms and their physical environment.
So, the biosphere, being the highest level of organization, includes everything from the level of organisms to populations, communities, and ecosystems.