Respuesta :
The pollutant responsible for major declines in the populations of pelicans, ospreys, and other marine birds was DDT.
A pollutant or novel entity is a substance or energy that is introduced into the environment and causes undesirable effects or reduces the usefulness of a resource. These can be of both natural and anthropogenic origin. Contaminants can pollute the environment or become a public health problem when they reach levels high enough to cause significant adverse effects.
Pollutants can cause long-term or short-term harm by altering the growth rates of plant and animal species and by affecting human comfort, well-being, health, and property values. There is nature. Some contaminants are biodegradable and therefore do not remain in the environment for long periods of time. However, the decomposition products of some contaminants are themselves contaminated, such as the products DDE and DDD resulting from the decomposition of DDT.
Pollution has far-reaching negative effects on the environment. When analyzed in terms of planetary boundaries, human societies have unleashed new entities far beyond their safe levels.
Learn more about Pollutant here: https://brainly.com/question/24704410
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