By studying fossils, scientists can learn how much (or how little) organisms have changed as life developed on Earth. There are gaps in the fossil record because many early forms of life were soft-bodied, which means that they have left few traces behind. This is why scientists cannot be certain about how life began.
Uranus is the seventh planet from the sun and the first to be discovered by scientists. Uranus is blue-green in color, the result of methane in its mostly hydrogen-helium atmosphere.
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DNA, also known as deoxyribonucleic acid, is the molecule that contains the genetic code of organisms; a genetic code that determines all the characteristics of a living thing.
Some common issues of digestive health include heartburn, cancer, irritable bowel syndrome, and lactose intolerance.
