Which of the following environmental issues represents the least immediate threat to ocean ecosystems?

A: entanglement of marine mammals in trawl nets and overfishing

B:melting of the ice caps and increased carbon dioxide levels in the atmosphere

C:nutrient runoff and industrial waste discharge

D:sewage and algal blooms

Question

Which of the following environmental issues represents the least immediate threat to ocean ecosystems?

A: entanglement of marine mammals in trawl nets and overfishing

B:melting of the ice caps and increased carbon dioxide levels in the atmosphere

C:nutrient runoff and industrial waste discharge

D:sewage and algal blooms

anonymous · Answer

D

shreehari499 · Answer

Yup @KL-RC  is rite!! Comparing to the other options..The sewage and algal blooms are lesser threat to our environment..But still they are dangerous too..  :)