"For example," explains Dr. Marc Norman, a lunar geologist at the University of Tasmania, "lunar samples have almost no water trapped in their crystal structure, and common substances such as clay minerals that are ubiquitous on Earth are totally absent in Moon rocks."
(lunar samples; have; almost no water trapped in their crystal structure) (almost no water; trapped; in their crystal structure) (clay minerals; are; ubiquitous on Earth) (common substances such as clay minerals; are; totally absent in Moon rocks) (Dr. Marc Norman; [is] a lunar geologist at; the University)
lunar samples almost no water clay minerals common substances such as clay minerals Dr. Marc Norman
have trapped are are [is] a lunar geologist at
almost no water trapped in their crystal structure
in their crystal structure
ubiquitous on Earth
totally absent in Moon rocks
the University