1. What is a biogeochemical cycle? Why is the cycling of matter essential to the continuance of life? 2. Describe how organisms participate in each of these biogeochemical cycles: carbon, nitrogen,...

1. What is a biogeochemical cycle? Why is the cycling of matter essential to the continuance of life?

2. Describe how organisms participate in each of these biogeochemical cycles: carbon, nitrogen, phosphorus, and sulfu