Freshwater and Marine Biomes Answers

Organisms that live in freshwater and marine biomes have developed unique adaptations that aid in their survival. Which of the following adaptations would be more useful for an animal in a marine biome than for an animal in a freshwater biome? a. flippers and flattened tails b. smooth, nearly furless body c. streamlined body d. tolerance to high levels of salinity Please select the best answer from the choices provided

Which of the following phrases describes a typical river mouth?a.clearer water with high levels of oxygenb.decreased vegetation and lower oxygen levelsc.increased species diversityd.high levels of vegetation

What discovery was made by Alvin?a.over 4000 new species of marine lifeb.hydrothermal ventsc.the Aqualungd.the temperature of different parts of the ocean

Limnetic, profundal, littoral, and benthic have what in common?a.They refer to the upper-level zones found in salt- and freshwater ecosystems.b.They are all zones found in freshwater systems.c.They refer to the lower-level zones found in salt- and freshwater ecosystems.d.They are all zones found in saltwater systems.

Unlike lakes, the ocean is separated into zones.

Organisms that live in freshwater and marine biomes have developed unique adaptations that aid in their survival. Which of the following adaptations does not help an animal move through the water? a. streamlined body b. thick layer of blubber c. flippers and flattened tails d. smooth, almost furless body Please select the best answer from the choices provided

Researchers aboard the H.M.S. Challenger discovered over 4000 new species of marine life.

Which of the following organisms lives near the surface of aquatic biomes because it needs sunlight to survive?a.phytoplanktonb.zooplanktonc.sturgeond.manatee

Waste disposal, food source, medicines, medicinal therapies, and aquaculture are all ways _______.a.humans impact the marine environmentb.humans utilize marine resourcesc.marine environments have impacted humansd.all of the above

Saltwater fish constantly drink water but still excrete concentrated urine to compensate for the water loss. They also have gills to help excrete excess salts. Conversely, freshwater fish absorb salt from their surroundings using their gills and their bodies reabsorb salt from their urine. This describes how salt- and freshwater fish _______.a.use their gills to drinkb.keep the salinity levels even in their aquatic environmentsc.have adapted to deal with osmosisd.have evolved behavior patterns to match their physiology