There are 16 mineral elements essential for normal plant growth classified as either macronutrients (hydrogen, carbon, oxygen, nitrogen, potassium, calcium, magnesium, phosphorus, and sulfur) or micronutrients (molybdenum, copper, zinc, manganese, iron, boron, and chlorine),
1 Colman Domingo as Victor Strand, a smart and sophisticated businessman with a mysterious past. (recurring season 1, starring season 2)  Michelle Ang as Alex, one of the few survivors of a plane crash who the Los Angeles group encounters in season 2. Alex is introduced in the Fear the Walking Dead: Flight 462 web series.
In 2011, Cohan was cast in her most famous role: Maggie Greene on the second season of The Walking Dead, an AMC horror drama series based on the comic book series of the same name. At first the character was recurring but became starring at the start of the third season.