Which biogeochemical cycle is least dependent on biotic processes?
question 8 options:

carbon

nitrogen

phosphorus

water

Phosphorus  biogeochemical cycle is least dependent on biotic processes

Explanation:

The slowest biogeochemical cycle, the phosphorus cycle  doesn’t have a constant stability in the atmosphere unlike other biogeochemical cycles. Other cycles include- Carbon cycle, nitrogen cycle, water cycle etc.

Phosphorus has it’s cycle through the soil, water and sediment biotic factors. It persists in a small amount in the atmosphere and it has a liquid state in room temperature.  It is a limited cycle for plants and animals.  

explanation:

the fossil record extends back to a dog-like ancestor some 55 million years ago, which gave rise to the first horse-like species 55 to 42 million years ago in the genus eohippus.

clumped distribution, because you'de have all of the population gathered in a relatively small are.

it's the most common because it provides protection and a mate for reproduction

example: humans, seeweed, cattles, etc.