Two effects of the disruption of the carbon cycle are:
Climate change: The carbon cycle helps regulate the Earth's climate by balancing the amount of carbon dioxide in the atmosphere. When this cycle is disrupted, excess carbon dioxide is released into the atmosphere, leading to global warming and climate change.
Ocean acidification: Excess carbon dioxide from human activities also leads to ocean acidification. The ocean absorbs about 25% of the carbon dioxide that is released into the atmosphere, causing the pH of the ocean to decrease. This makes the ocean more acidic, which can harm marine life and disrupt entire ecosystems.