In terms of common ancestry, there is in fact very little fossil evidence or biological evidence that suggest the life evolved from simple compounds. (religion.blogs.cnn.com)
Students begin to recognize and understand simple compound words, such as airplane and toothbrush, in first grade, then progress to more complex compound words. (spellingcity.com)
The explosives also leach out and both types of chemical are digested by bacteria into simple compounds such as methane and ammonia. (newscientist.com)