Which pair of processes are a part of the carbon cycle?*1 pointnitrogen and denitrificationphotosynthesis and cellular respirationevaporation and transpirationall of the above

The pair of processes that are a part of the carbon cycle is photosynthesis and cellular respiration.

Here's why:

1. Photosynthesis: This is a process where green plants and some other organisms use sunlight to synthesize foods with the help of carbon dioxide and water. In this process, carbon dioxide from the atmosphere is absorbed by plants and used to produce glucose, which is a type of sugar. This process helps in reducing the amount of carbon dioxide in the atmosphere, thus playing a crucial role in the carbon cycle.

2. Cellular Respiration: This is a set of metabolic reactions and processes that take place in the cells of organisms to convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products. The waste product of cellular respiration is carbon dioxide, which is released back into the atmosphere. This process helps in increasing the amount of carbon dioxide in the atmosphere, thus playing a crucial role in the carbon cycle.

The other processes mentioned, nitrogen and denitrification, and evaporation and transpiration, are part of the nitrogen cycle and water cycle respectively, not the carbon cycle.