It is theorized that life began as the result of organic molecules being synthesized in the early atmosphere and rained down into the oceans. These nucleotides would have been similar to the RNA and DNA, which are the bu... More »

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From a metabolic point of view, life begins at the cellular level. This level is made up of the smallest unit of living matter, the cell. Individual cells may have some common functions but vary widely in size and shape. More »

While there are many theories as to how life began on Earth, no theory has been accepted as truth, according to NBC News. Biologist Diana Northup from the University of New Mexico says this is because it's hard to prove ... More »

Global warming refers to the gradual increase in the temperature of the Earth's surface, atmosphere and oceans as a result of greenhouse gases. Carbon monoxide emissions created by deforestation and burning fossil fuels ... More »

People who live full time in the Caribbean enjoy warm weather and a relaxed island-life atmosphere. Many cultures are represented in the Caribbean, making it a melting pot of immigrant culture. Caribbean islanders make t... More »

Cultural diffusion is the spread of culture, including aspects such as clothing and food, from one group to another, typically as a result of making contact for the first time. European explorers bringing back foods and ... More »

The people known as Cajuns came to what became Louisiana in the mid-18th century as a result of the French and Indian War. They were originally French settlers who first settled in Canada. The area of Canada from where t... More »

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