8+What+is+the+Origin+of+Life?+EC,+SV,+KJ

Some accepted theories...
 * WHAT IS THE ORIGIN OF LIFE?**

1. Electric Spark Theory Sparks can use elements such as water, methane, ammonia, and hydrogen in the atmosphere to generate amino acids and other helpful sugars. This was proven in the Miller-Urey experiment of 1953. This theory explores the possibility of a lightning strike creating the building blocks of life.

2. Community Clay According to Alexander Graham Caims-Smith the first molecules of life met on clay. The surfaces may not have concentrated the organic compounds but also arranged molecules into organized patterns like genes. Camis-smith suggests that mineral crystals could have arranged into organized patterns after a while.

3. Deep-Sea Vents This theory explains that life began at "submarine hydrothermal vents." These vents spew hydrogen-rich molecules essential to life. It is believed that the molecules could've then concentrated and provided the mineral catalysts for critical reactions. An important fact that supports this theory is the diverse ecosystems these vents are home to today.

4. RNA World This isn't a theory of how life began as much as it is about how life first evolved. DNA needs protein to for and protein needs DNA. This is just another chicken and egg question, the only difference being that this one has an logical (but not proven) answer. RNA. The scientists that support this theory believe that RNA had "spontaneously arisen" on Earth, but this not a widely accepted idea of how RNA came to be, so the real question is how was RNA created?

5. Simple Beginnings This theory is similar to the last minus the RNA. These scientists believe that molecules even simpler than RNA interacted with each other in a never ending cycle of reactions.

6. Panspermia This theory deals only with how life originated on Earth. But that was the question, right? Wrong. The question was what was the origin of life. This theory states that life originated on another planet, particularly Mars, and then was blasted off mars on flying debris that then landed on Earth. So essentially, were all martians.

http://www.livescience.com/13363-7-theories-origin-life.html Eva Chase Sterling Vahey Kayla Jekel Period 8