AP BIOLOGY

Detailed explanation-1: -They are organized from smallest to largest; organism, population, community, ecosystem.

Detailed explanation-2: -Level 1: Cells The first and most basic level of organization is the cellular level. A cell is the basic unit of life and the smallest unit capable of reproduction. While cells vary greatly in their structure and function based on the type of organism, all cells have a few things in common.

Detailed explanation-3: -Within the discipline of ecology, researchers work at five broad levels, sometimes discretely and sometimes with overlap: organism, population, community, ecosystem, and biosphere. Let’s take a look at each level.