| A | B |
|---|
| cell | smallest unit of life that can carry on life's processes |
| tissue | groups of cells that perform a common function |
| biological molecule | these are chemical compounds that make up the structure of organelles and are made of atoms |
| atom | the simplest particle of an element that retains all the properties of that element |
| organelle | the tiny structures inside a cell that have a particular function |
| organ | structure that carry out specialized jobs within an organ system |
| organ system | group of organs working together for a particular funtion |
| organism | an independent individual that posses all characteristics of life |
| population | a group of organisms of the same species that live in a specific location and interbreed |
| community | a group of differentspecies that live in the same habitat and interact with each other |
| ecosystem | a community of organisms and their abiotic environment |
| biosphere | the part of Earth where life exists |
| organization | the high degree of order within an organism's internal and external parts and in its interactions with the living world |
