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 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.

Understanding the salinity of aquatic environments is unimportant in understanding the overall ecosystem.

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

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

An estuary is _______.a.a freshwater biomeb.an area with a low concentration of minerals and nutrientsc.characterized by deep waterd.an ecotone

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

Unlike lakes, the ocean is separated into zones.

Which of the following is not an example of a wetland?a.estuaryb.bogc.swampd.marsh