GMAT Reading Comprehensionঅনুশীলন2

The Pacific Garbage Patch, often depicted in media and popular discourse as a "floating island of trash," is far more complex than this simplistic characterization. In reality, this infamous environmental blight is not a single, contiguous mass. Instead, it's an expanse comprised predominantly of "microplastics" — minute plastic particles. These microplastics are remnants of larger plastic items that have fragmented over time due to various environmental factors. Prolonged exposure to ultraviolet rays from the sun, combined with the relentless wear and tear from ocean waves and currents, has caused these plastics to degrade and break apart. Over time, these once large pieces transform into microplastics, which become suspended throughout the water column, dispersing over vast swathes of the Pacific Ocean. As such, the common image of a solid "patch" or "island" is misleading. Instead, one should envision countless tiny particles scattered over an area, much like dust motes in a sunbeam.

These microplastics present a multifaceted threat to marine ecosystems. Surface-floating particles often resemble the food sources of various marine species, ranging from microscopic plankton to majestic whales. The unfortunate result is the inadvertent consumption of these pollutants. For marine animals, the ingestion of microplastics can have dire consequences. In the short term, the consumption can lead to malnutrition and internal injuries, as these indigestible particles occupy space within their digestive tracts. In the long term, there's the added threat of toxicity. Microplastics are notorious for their propensity to absorb various toxins from the surrounding marine environment. As these toxin-laden plastics are ingested, they introduce these harmful chemicals into the bodies of marine animals. This bioaccumulation not only poses an immediate threat to the consuming organism but can also wreak havoc up the marine food web. As larger predators feed on prey laden with microplastics, the toxins magnify in concentration. Over time, these accumulated toxins can compromise the health of entire marine populations and disrupt the balance of marine ecosystems.