AP BIOLOGY

Detailed explanation-1: -Nutrient cycle is also known as the cycle of matter. Nitrogen, water and carbon all three are cycle of matter but energy cycle is not. Thus, correct option is B.

Detailed explanation-2: -The correct answer is Phosphorus cycle.

Detailed explanation-3: -The ways in which an element-or compound such as water-moves between its various living and nonliving forms and locations in the biosphere is called a biogeochemical cycle. Biogeochemical cycles important to living organisms include the water, carbon, nitrogen, phosphorus, and sulfur cycles.

Detailed explanation-4: -The energy cycle describes the interactions between energy sources within the Earth’s environment. These interactions are very complex, and even small changes in them can lead to significant changes in long-term climate behavior. A simple illustration of the major elements of the energy cycle is shown in the figure.

Detailed explanation-5: -Three of these processes are cycles – the water cycle, the nitrogen cycle and the carbon cycle. Plants play a key role in maintaining the balance of each of these cycles.