Pathogens in Water and Land Use Management Quiz

Carbon

photosynthesis CO2 + H2O -> CH2O + O2 respiration

It unbalances the equilibrium due to increased heterotrophic activity of aerobic microorganisms and causes a deficit of dissolved oxygen.

<p>Low dissolved oxygen levels can cause acute lethal toxicity in sensitive freshwater fish and mass mortalities in benthic communities.</p> Signup and view all the answers

<p>Low levels of oxygen, leading to death of aquatic animals.</p> Signup and view all the answers

<p>Nutrients come from a variety of sources, but human-related inputs are much greater due to activities like farming and wastewater treatment.</p> Signup and view all the answers

<p>Contamination of natural waters by human sewage poses a risk to public health.</p> Signup and view all the answers

<p>Phytoplankton bloom, algae bloom, and biological/microbial pollution.</p> Signup and view all the answers

<p>Contamination level, pathogens' persistence, biological reservoirs, and land use management practices.</p> Signup and view all the answers

<p>To maintain safe operating conditions, reduce stress on the hull, provide stability, improve propulsion, and compensate for weight lost due to fuel and water consumption.</p> Signup and view all the answers

<p>They are taken on as sediment and marine organisms.</p> Signup and view all the answers

<p>Approximately 10 billion tons.</p> Signup and view all the answers

<p>Ballast water and sediments</p> Signup and view all the answers

<p>Viruses, bacteria, fungi, plants, and animals</p> Signup and view all the answers

<p>Marine biotoxins, chemical contaminants, and microbial contamination</p> Signup and view all the answers

<p>Paralytic shellfish poison (PSP), amnesic shellfish poison (ASP), okadaic acid, dinophysistoxins, pectenotoxins, yessotoxins, and azapiracids</p> Signup and view all the answers