Threats to the ocean
Threats to the ocean
The concentration of carbon dioxide (CO2) in the atmosphere has increased due to the burning of fossil fuels and land use change.
A reduction in the pH of the ocean over an extended period of time, caused primarily by uptake of carbon dioxide (CO2) from the atmosphere.
When CO2 is absorbed by seawater, a series of chemical reactions occur resulting in the increased concentration of hydrogen ions. This increase causes the seawater to become more acidic and causes carbonate ions to be relatively less abundant.
Carbonate ions are an important building block of structures such as sea shells and coral skeletons
Certain fish's ability to detect predators is decreased in more acidic waters. When these organisms are at risk, the entire food web may also be at risk.
Global warming is the current increase in temperature of the Earth's surface (both land and water) as well as it's atmosphere.
A long series of scientific research and international studies has shown, with more than 90% certainty, that this increase in overall temperatures is due to the greenhouse gases produced by humans
Activities such as deforestation and the burning of fossil fuels are the main sources of these emissions.
The effects of global warming are higher death rates, dirtier air, higher wildlife extinction rates, more acidic oceans, higher sea levels and more frequent and severe weather
Untreated sewage, garbage, fertilizers, pesticides, industrial chemicals, plastics . Most of the pollutants on land eventually make their way into the ocean, either deliberately dumped there or entering from water run-off and the atmosphere.
Also known as marine pollution, is the spreading of harmful substances such as oil, plastic, industrial and agricultural waste and chemical particles into the ocean.
Effects of ocean pollution are disruption to the cycle of coral reefs, depletes oxygen content in water, failure in reproductive system of sea animals, effect in food chain and affect on human health.