Many cycles on earth involve the conservation of matter. which of the following is not a major cycle on earth?
a. air cycle
b. rock cycle
c. carbon cycle
d. nitrogen cycle

D.) nitrogen cycle is the biogeochemical cycle when nitrogen is converted into many different chemical forms and circulates among the atmosphere, terrestrial, and marine ecosystems. It is not a major cycle on Earth, like the air cycle (which we need to breathe), the rock cycle (e.g, weathering and erosion), and the carbon cycle (involving carbon dioxide and photosynthesis).

the answer would be b

explanation:

true is the final answer!