Which of the following statements about biogeochemical cycles is not true?
ABiogeochemical cycles include living and nonliving elements.
BThe rock cycle is a biogeochemical cycle.
CBiogeochemical cycles are an important part of the Earth system.
DCarbon, nitrogen, and oxygen cycles are biogeochemical cycles.
ABiogeochemical cycles include living and nonliving elements.
BThe rock cycle is a biogeochemical cycle.
CBiogeochemical cycles are an important part of the Earth system.
DCarbon, nitrogen, and oxygen cycles are biogeochemical cycles.