Answer:
Biosphere
Step-by-step explanation:
The atoms make the smallest level of organization. Various atoms together make different types of molecules. Cells are the structural unit of life. Starting from the cell, the various level of organization in increasing order are cell-tissue-organs-organ systems-organisms-populations-community-ecosystem-biosphere. Hence, the biosphere is the largest unit of organization for living beings. Being the highest level of organization, it is most inclusive in nature and includes all other levels