Unit Test — Unit test Answers

Which system serves as the interface between the other spheres? a.geosphereb.hydrospherec.atmosphered.biosphere

Which of the following can be natural sources of water pollution? a. volcanic activity b. earthquakes c. algae blooms d. all of the above Please select the best answer from the choices provided

Which of the following statements about the interaction of Earth’s systems is true?a.The interaction between Earth’s systems is limited to a response to human activity.b.The Earth’s system interact using positive feedback only.c.The Earth’s systems interact using negative feedback only.d.All of the Earth’s systems interact with each other.

Carbon in the ocean originates from the atmosphere.

Which of the following cycles is crucial to living organisms? a. phosphorus b. water c. carbon d. all of the above Please select the best answer from the choices provided

Water is an abiotic factor in terrestrial environments.

Which organism would be the best subject for a study of both photosynthesis and cellular respiration?

Which level of consumer has access to the smallest supply of energy? a. primary b. secondary c. tertiary d. quaternary Please select the best answer from the choices provided

Which of the following is not an example of an abiotic factor?a.plantsb.airc.temperatured.soil

The open ocean, sea floor, and coral reefs are all examples of habitats with high rates of primary production.

Which of the following did not allow researchers to further explore below the ocean’s surface?a.ROV’sb.Alvinc.Palomaresd.Bathysphere

The sun is the ultimate source for energy on the Earth.

How is nitrogen returned to the atmosphere during the nitrogen cycle?a.It is returned to the atmosphere in a process called nitrogen fixation.b.It is returned to the atmosphere through denitrification.c.It is returned to the atmosphere through cellular respiration.d.It is returned to the atmosphere through evapotranspiration.

A portion of grass in a prairie ecosystem was destroyed by wildfire. What will most likely happen to the population of bison that feed on the grass?a.The number of bison will increase.b.The number of bison will decrease.c.The bison in the ecosystem will be completely wiped out.d.The number of bison will remain unchanged.

How does water enter the atmosphere? a. Liquid water evaporates from lakes when heated by the sun. b. Frozen water sublimates from ice and snow. c. Liquid water is lost from tree leaves during evapotranspiration. d. All of the above. Please select the best answer from the choices provided

Echolocation is an adaptation bats use to _______. a. hunt insects in flight b. locate flowering plants c. find warm places for hibernation d. all of the above Please select the best answer from the choices provided

The marine biome _______.a.is a large ecosystem, but not larger than some terrestrial ecosystemsb.is characterized by four different zonesc.has little species diversityd.covers a small portion of the Earth’s surface

Mira analyzed oxygen and carbon dioxide in inhaled and exhaled air. She found that the percentages of both gases were different in each. What other gas would most likely also have different amounts in inhaled and exhaled air?

The graphic below shows how photosynthesis and cellular respiration are related.Which label in the graphic represents the energy that is released from glucose by cellular respiration?

Which of the following adaptations is typical of marine mammals?a.thick layer of blubberb.body covered in thick furc.webbed hands and feetd.breathing apparatus on the sides of the head