Question

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

Answer 1

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).