Pollution refers to the presence of environmental contaminants in quantities large enough to cause damage, deterioration, or toxicity. Such contaminants are known as pollutants. While some forms of pollution have natural causes, the term is used almost exclusively to refer to pollution caused by human activity.
Marine pollution is the detrimental alteration of a portion of an ocean or ocean coastline. Pollution is often a threat to any organism living in or depending upon the ocean. Human impact on coastal and open ocean habitats comes in many forms: nutrient loading from agricultural runoff and sewage discharges, toxic chemical inputs from industry and agriculture, petroleum spills, and inert solid wastes.
Among the greatest challenges humankind has faced throughout its history, feeding the world’s hungry ranks at or near the very top of the list.
Agreeing on what exactly are human rights and how they can be used by a person is a subject of debate among scholars, human rights activists, citizens, and governments all over the world.
US government and public health officials have used the term opioid crisis or opioid epidemic to describe the sharp recent rise in the number of Americans who abuse or are addicted to opioids. Opioids are a class of drugs that relieve pain by working on opiate receptors in the user’s brain.