Respuesta :
ANSWER:- option A formation of fossil fuels.
Explanation:-
- Fossil fuels are formed from dead and decaying plants and animal.
- When the dead and decaying plants and animals are exposed to heat and pressure over a long period of time they get converted to oil, coal, gas etc.
- These oil ,coal, gas are called as fossil fuels.
- The entire process of formation of fossil fuels can take place over a million of years.
- In contrast to the formation of fossil fuels , the process of photosynthesis in plants, respiration in animals and emission of waste is a phenomena which occurs at daily basis and over a short interval of time.
So, the formation of fossil fuels is the phenomena which takes the longest time in the carbon cycle.
Formation of fossil fuels is a process in the carbon cycle that takes the longest time to complete.
How much time taken by fossil fuel formation?
Fossils are the remains of organisms that died more than 10,000 years ago so this means that 10,000 years are required for the formation of fossil fuel.
So we can conclude that formation of fossil fuels is a process in the carbon cycle that takes the longest time to complete.
Learn more about carbon cycle here: https://brainly.com/question/1194643
