The Cycles of Matter Answers

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

Photolysis is a part of which cycle?a.phosphorusb.oxygenc.nitrogend.carbon

Biogeochemical cycles recycle water and natural elements throughout the biosphere to ensure that organisms do not run out of these substances. Diagram by NASA/Kevin Saff Diagram by Ilmari Karonen Which of the following processes plays an important role in cycling carbon, nitrogen, and phosphorus?

Biogeochemical cycles recycle water and natural elements throughout the biosphere to ensure that organisms do not run out of these substances. Thiobacillus denitrificans is a specialized species of bacteria that obtains its energy from carbon dioxide and inorganic nitrogen-containing compounds such as nitrates in its environment. It is used in the bioremediation of groundwater that contains excess nitrate. How does Thiobacillus denitrificans help bioremediate groundwater?

In the BOREAS study, scientists are trying to determine if a large amount of carbon is being taken in by what biome?a.rainforestb.tundrac.boreal forestd.desert

Where is the water stored during the water cycle?a.the atmosphereb.the groundc.the oceand.all of the above

The biogeochemical cycles move through biotic and abiotic regions.

Which of the following does not take place in the water cycle? a. precipitation b. evaporation c. carbonation d. condensation

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

Nitrogen fixation _______.a.is the process where nitrogen is converted to a usable formb.is accomplished by plants when they break down soilc.occurs as a result of photosynthesisd.none of the above