Hypothesis and Guiding Question

If I adjust the amount of fertilizer to phytoplankton, then the photosynthesis rate will change. What is the impact of plants on the carbon system?

Carbon System

Plankton

Plankton Link to raw data: https://docs.google.com/spreadsheets/d/1d729LT0Avsd_vFAc5sjHDQYlWuv7h3IIYZwAmrecJFs/edit?usp=sharing