They converted carbon dioxide to oxygen. The increased oxygen levels allowed for cellular respiration to occur instead of only glycolysis. The atmosphere became thinner, decreasing temperatures of the planet as well.
Water has some unusual properties due to its hydrogen bonds. One property is cohesion, the tendency for water molecules to stick together. The cohesive forces between water molecules are responsible for the phenomenon known as surface tension.
Photosynthesis is the process by which plants and other things make food. It is a chemical process that uses sunlight to turn carbon dioxide into sugars that the cell can use as energy. As well as plants, many kinds of algae, protists, and bacteria use it to get food.
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Lincoln worked as a boatman, store clerk, surveyor, militia soldier, and became a lawyer in Illinois. He was elected to the Illinois Legislature in 1834, and was reelected in 1836, 1838, 1840, and 1844.
