Marine debris is the litter or the waste created and released by humans deliberately or unintentionally in the oceans and water bodies. The given statement is false.
Marine debris includes waste like abandoned ships, plastics, fishing equipment, medical wastes, industrial effluents and many others. These are released in the water bodies like the rivers, seas and oceans by intentional or unintentional human activities.
It is not necessary that a landlocked nation cannot contribute to the marine debris as it can create and dump the debris and wastes even when there are no immediate water bodies.
Therefore, landlocked nations can contribute to marine debris.
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