Find the reasons of Ocean gets polluted and prepare a short note
Answers
Answer:
Various Causes of Ocean Pollution
Sewage. Pollution can enter the ocean directly. ...
Toxic Chemicals From Industries. Industrial and agricultural waste is another most common form of wastes that is directly discharged into the oceans, resulting in ocean pollution. ...
Land Runoff. ...
Large Scale Oil Spills. ...
Ocean Mining. ...
Littering.
Answer:
Oceans are the largest water bodies on the planet Earth. Over the last few decades, excessive human activities have severely affected marine life on the Earth’s oceans. Ocean pollution, 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.
Since oceans provide the home to a wide variety of marine animals and plants, it is the responsibility of every citizen to play his or her part in making these oceans clean so that marine species can thrive for a longer period of time.
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Mining for materials such as copper and gold is a major source of contamination in the ocean. For example, copper is a major source of pollutants in the ocean and can interfere with the life cycles of numerous marine organisms and life.
The greatest threat to our planet is the belief that someone else will save it.
~ Robert Swan
According to National Geographic,
“”Many ocean pollutants are released into the environment far upstream from coastlines. Nitrogen-rich fertilizers applied by farmers inland, for example, end up in local streams, rivers, and groundwater and are eventually deposited in estuaries, bays, and deltas. These excess nutrients can spawn massive blooms of algae that rob the water of oxygen, leaving areas where little or no marine life can exist.”
Contents [hide]
Various Causes of Ocean Pollution
1. Sewage
2. Toxic Chemicals From Industries
3. Land Runoff
4. Large Scale Oil Spills
5. Ocean Mining
6. Littering
Devastating Effects of Ocean Pollution
1. Effect of Toxic Wastes on Marine Animals
2. Disruption to the Cycle of Coral Reefs
3. Depletes Oxygen Content in Water
4. Failure in the Reproductive System of Sea Animals
5. Effect on Food Chain
6. Affects Human Health
Solutions to Ocean Pollution
1. Reducing the Use of Plastic Products
2. Use Reusable Bottles and Cutlery
3. Recycle Whatever You Can
4. Stop Littering the Beach, and Start Cleaning It
5. Reducing the Use of Chemical Fertilizers
6. Reducing the Energy Use
Various Causes of Ocean Pollution
There are various ways in which pollution enters the ocean. Some of them are:
1. Sewage
Pollution can enter the ocean directly. Sewage or polluting substances flow through sewage, rivers, or drainages directly into the ocean. This is often how minerals and substances from mining camps find their way into the ocean.
The release of other chemical nutrients into the ocean’s ecosystem leads to reductions in oxygen levels, the decay of plant life, and a severe decline in the quality of the seawater itself. As a result, all levels of oceanic life, plants and animals, are highly affected.
2. Toxic Chemicals From Industries
Industrial and agricultural waste is another most common form of wastes that is directly discharged into the oceans, resulting in ocean pollution.
The dumping of toxic liquids in the ocean directly affects marine life as they are considered hazardous, and secondly, they raise the temperature of the ocean, a phenomenon known as thermal pollution, as the temperature of these liquids is quite high. Animals and plants that cannot survive at higher temperatures eventually perish.
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3. Land Runoff
Land runoff is another source of pollution in the ocean. This occurs when water infiltrates the soil to its maximum extent, and the excess water from rain, flooding or melting flows over the land and into the ocean.
Often, this water picks up man-made, harmful contaminants that pollute the ocean, including fertilizers, petroleum, pesticides and other forms of soil contaminants. Fertilizers and waste from land animals and humans can be hugely detrimental to the ocean by creating dead zones.
4. Large Scale Oil Spills
Ship pollution is a huge source of ocean pollution, the most devastating effect of which is oil spills. Crude oil lasts for years in the sea and is extremely toxic to marine life, often suffocating marine animals to death once it entraps them. Crude oil is also extremely difficult to clean up, unfortunately, meaning that when it is split, it is usually there to stay.
Besides, many ships lose thousands of crates each year due to storms, emergencies, and accidents. This causes noise pollution (excessive, unexpected noise that interrupts the balance of life, most often caused by modes of transportation), excessive algae, and ballast water.
Often, other species can also invade an ecosystem and do harm to it by interrupting the life cycles of other organisms, causing a clash of nature that has already been damaged by the overflow of pollution.
5. Ocean Mining
Ocean mining in the deep sea is yet another source of ocean pollution. Ocean mining sites drilling for silver, gold, copper, cobalt, and zinc create sulfide deposits up to three and a half thousand meters down into the ocean.