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The oceans play a vital role in regulating the Earth’s climate. They absorb carbon dioxide (CO2) from the atmosphere and help maintain temperature balance. However, increasing CO2 levels are causing ocean acidification and threatening marine biodiversity.
Ocean Acidification
When CO2 dissolves in seawater, it forms carbonic acid, which lowers the pH of the ocean. This process is known as ocean acidification. It can harm marine organisms that rely on calcium carbonate to build shells and skeletons, such as corals and mollusks.
Acidification can weaken these structures, making organisms more vulnerable to predation and environmental stress. This disruption affects the entire marine food chain and ecosystem stability.
Marine Biodiversity Loss
Rising ocean temperatures and acidification contribute to the loss of marine biodiversity. Coral reefs, which support a vast array of species, are particularly at risk. Bleaching events and disease outbreaks are increasing in frequency and severity.
Other species, such as fish and invertebrates, face habitat loss and declining populations. This biodiversity loss impacts fisheries, coastal communities, and global food security.
Impacts on Climate Regulation
The oceans help regulate climate by storing heat and carbon. Disruptions to marine ecosystems can reduce their capacity to perform these functions. As a result, climate change effects may intensify, leading to more extreme weather events and rising sea levels.
- Coral bleaching
- Loss of fish populations
- Disruption of marine food webs
- Decreased carbon sequestration