Final answer:
After 100 years in the post-industrial simulation, the amount of carbon dioxide would have significantly increased in the atmosphere, leading to ocean acidification and potentially impacting plant growth and ecosystems.
Step-by-step explanation:
After 100 years in the post-industrial simulation, the amount of carbon in the biosphere, atmosphere, and ocean would have changed due to human activities such as burning fossil fuels.
In the atmosphere, the concentration of carbon dioxide (CO₂) would have increased significantly. Scientists predict that it could double its preindustrial level before the end of the twenty-first century. In the ocean, the increase in atmospheric CO₂ leads to ocean acidification, which decreases the pH of the water and poses a threat to marine life.
In the biosphere, the increased carbon dioxide concentration affects plant growth and can lead to changes in ecosystems.