"They are <span>multicellular" is not a characteristic of bacteria. Although it should be noted that the smallest life forms don't necessarily have to be bacterial. </span>
Is an organism in its earliest stage of development. In humans, this is the stuff and defined as the developing organism from the fourth day after fertilization to end of the week. After that unborn baby is usually referred to as the fetus.
6CO2 + 6H2O --> C6H12O6 + 6O2
carbon dioxide + water --> glucose + oxygen
The arrow indicates sunlight (energy).
:)
