Ana fikirSoru #10773
Microplastics in Fluvial Systems
While public awareness regarding microplastic contamination has predominantly centered on oceanic gyres, limnologists have revealed that freshwater fluvial systems are equally besieged by synthetic pollutants. Rivers serve not merely as passive corridors transporting urban plastic waste to coastal estuaries; they are active depositional basins where microplastics accumulate across benthic sediments. Synthetic microfibers shed from laundering synthetic textiles and tiny crumb rubber particles pulverized from automobile tires comprise the dominant share of freshwater plastic loads. Because these microscopic polymers resemble natural food particles in size and buoyancy, benthic macroinvertebrates and juvenile fish indiscriminately ingest them. Beyond inducing physical blockages and lacerations in gastrointestinal tracts, microplastics act as sponges that adsorb hydrophobic persistent organic pollutants, such as polychlorinated biphenyls (PCBs), transferring concentrated toxins up the riparian food web. What is the primary objective of the passage?
- A)To describe the seasonal migration habits of freshwater trout in European lakes
- B)To promote the commercial bottling of spring water from alpine glacial streams
- C)To demonstrate that marine plastic pollution is entirely resolved by coastal cleanup projects
- D)To compare the manufacturing costs of polyethylene bottles with aluminum beverage cans
- E)To examine the widespread dispersion and ecological hazards of microplastics in freshwater river networks
Cevabı ve çözümü göster
Doğru cevap: E) To examine the widespread dispersion and ecological hazards of microplastics in freshwater river networks
Çözüm: Metin tatlı su nehir sistemlerinde mikroplastiklerin yayılmasını ve besin zincirine girerek yarattığı ekolojik tehlikeleri inceler. Doğru cevap E'dir.