Spirulina is a type of cyanobacteria. The cyanobacteria are a type of bacteria that have pigments that allow them to photosynthesize. Which organelle allows a plant to photosynthesize?
Because Putting a carrot in salty water will make it shrivel up, as water leaves the carrot's cells to enter the salty water -- a process called osmosis.
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Anaerobic respiration was very weak because the earth had no harmful chemicals in the air at the time
