Grown in rice paddies in Southeast Asia in lieu of fertilizer, they are technically classified as bacteria, but their popular name derives from the color produced by chlorophyll and phycobilin, a blue pigment.
Abundant in tide pools and coral reefs, they are also common in soil down to a depth of a meter or more, and are often among the first colonizers of bare rock. Grown in rice paddies in Southeast Asia in lieu of fertilizer, they are technically classified as bacteria, but their popular name derives from the color produced by chlorophyll and phycobilin, a blue pigment. Evolving some three billion years ago, FTP, what organisms profoundly altered earthÕs atmosphere by liberating oxygen in the first wa  ter-based photosynthetic reactions?
Abundant in tide pools and coral reefs, they are also common in soil down to a depth of a meter or more, and are often among the first colonizers of bare rock.
cyanobacteria or blue-green algae