The long-term effects of waste disposal at sea must obviously depend upon the length of time taken for material to be broken down to a harmless form. The extent to which continuous addition of substances may be cumulative in effect will depend partly on their persistence in the water. Pollutants can be tentatively classified as transient, moderately persistent, very persistent and virtually permanent. Examples of the length of time that various litter items may persist are given in Table 10.2. These are maximum times which may be shortened by wave action and abrasion.
Was this article helpful?
The Reasons Behind And The Plan To Build A Healthy Ego. It is important for us all to ensure that our egos are strong and healthy. Our ego is our identity. It is who we believe ourselves to be and as such is a reference point and our “home in the world.” The ego is individuality. As our identity it sets us apart from other people’s identity. Get your ego in order here.