The answer is tiny organisms known as cyanobacteria, or blue-green algae. These microbes conduct photosynthesis: using sunshine, water and carbon dioxide to produce carbohydrates and, yes, oxygen
<span>Galen says that the choleric person is passionate, ambitious, and bold. They can have dominant personalities, but they can also be irritable and ill-tempered. They are often stereotyped as competitive and defiant to authority, as they want to be the dominant ones. They are natural extroverts.</span>
