The nitrogen cycle is the process by which nitrogen is converted between its various chemical forms. This transformation can be carried out through both biological and physical processes. Important processes in the nitrogen cycle include fixation, ammonification, nitrification, and denitrification. The majority of Earth's atmosphere (78%) is nitrogen, making it the largest pool of nitrogen.
Topher Grace. Christopher John Topher Grace (/ËtoÊfÉr/; born July 12, 1978) is an American actor. He is known for his portrayal of Eric Forman on the Fox sitcom That '70s Show, Eddie Brock/Venom in the Sam Raimi film Spider-Man 3, Carter Duryea in the film In Good Company and Edwin in the 2010 film Predators. 1 Early life.
Aww! âThat â70s Showâ star, Topher Grace married his girlfriend, Ashley Hinshaw, in a sweet Santa Barbara wedding on May 29. What a perfect way to bring in the Memorial Day Weekend! Itâs official! Topher Grace, 37, and his girlfriend, Ashley Hinshaw, 27, are married. The That â70s Show actor and Ashley tied the knot in Santa Barbara, California, on May 29. Congratulations to the newlyweds!