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TOP HAT BIO final exam questions and answers
TOP HAT BIO final exam questions and answers 
 
 
So-called "dead zones" in coastal oceans are associated with nutrient runoff and oxygen-depleted bottom waters. What causes the oxygen depletion? - ANSWERS -Nutrient runoff causes algae populations to grow. When they die, they are consumed by heterotrophic bacteria that consume oxygen via aerobic respiration. 
 
Biodiversity in Lake Erie and its watersheds has declined in the past several decades. What are the likely causes of declines? (se...