16. How do plankton differ from nekton? (1 point)
Plankton are strong swimmers.
Plankton are floaters.
Plankton are carnivores.
Plankton live on the ocean bottom.
17. Algae can survive on the seafloor only in ____. (1 point)
polar areas
deep areas
shallow areas
high-density areas
10. Which of the following is NOT a hydrogenous sediment? (1 point)
manganese nodules
calcium carbonates
evaporites
calcareous ooze
12. Which ocean resource is currently NOT economically profitable to mine? (1 point)
salts
manganese nodules
sand
gravel
Plankton are strong swimmers.
Plankton are floaters.
Plankton are carnivores.
Plankton live on the ocean bottom.
17. Algae can survive on the seafloor only in ____. (1 point)
polar areas
deep areas
shallow areas
high-density areas
10. Which of the following is NOT a hydrogenous sediment? (1 point)
manganese nodules
calcium carbonates
evaporites
calcareous ooze
12. Which ocean resource is currently NOT economically profitable to mine? (1 point)
salts
manganese nodules
sand
gravel