Freshwater and Marine Biomes — Unit test Answers

What types of organisms will be affected by a decreased supply of water in an ecosystem?a.Producers, consumers, and decomposers will be affected.b.Producers and consumers will be affected.c.Consumers and decomposers will be affected.d.No organisms will be affected.

How are the carbon, nitrogen, and oxygen cycles similar?a.They are all biogeochemical cycles.b.They all involve an interaction between living and nonliving elements.c.They are all part of the Earth system.d.All of the above.

Which of the following typical adaptations of marine animals is not found in sea otters?a.streamlined bodyb.webbed hands and feetc.body covered in thick furd.breathing apparatus on the top of the head

Water stored in snow and ice can return directly to the atmosphere through the process of sublimation. Please select the best answer from the choices provided

Which of the following statements is true? a. The nitrogen cycle is the most important cycle for life. b. The oxygen cycle is the least important cycle for life. c. Life can be sustained without any of the cycles for life present. d. All cycles of matter are equally important for life to be sustained. Please select the best answer from the choices provided

Transitions between biomes do not have to be sharp and sudden, which means that different biomes can share characteristics.

Which of the following is a way humans have impacted the rainforests, but not the tundra?a.oil drillingb.miningc.overgrazingd.logging

The majority of water on the Earth is usable by plants and animals.

If a stationary body of water has a constant temperature from top to bottom it is most likely a(n) _______.a.lakeb.pondc.oceand.lagoon

Which of the following is most likely to be a limiting factor for growth on the floor of a tropical rainforest?a.waterb.shelterc.sunlightd.prey

Which of the following is not an example of interactions between biotic and abiotic factors in an ecosystem?a.flowers opening at dawn and closing at nightb.bears hibernating in winterc.male elk fighting over a femaled.Monarch butterflies migrating to Mexico for the winter

Which of the following is a specialist species?a.Giant Pandasb.Horsesc.Humansd.Rabbits

The inversion of terrestrial and aquatic energy pyramids is dependent upon the nature of that environment’s particular _______.a.decomposersb.climatec.primary consumersd.producers

Which of the following is not used to classify biomes?a.weather patternsb.continentc.dominant plant lifed.geographical terrain

Which of the following statements about positive feedback mechanisms is not true?a.Positive feedback mechanisms can result from human activity.b.Positive feedback mechanisms can occur naturally.c.Positive feedback mechanisms lead to increased change.d.Positive feedback mechanisms reduce change in a system.