Nutrient Cycling Exam 2

How does inefficient transfer of energy among trophic levels result in the typically high endangerment status of many top-level predators?

Why does a vegetarian leave a smaller ecological footprint than an omnivore?

For most terrestrial ecosystems, pyramids composed of species abundances, biomass, and energy are similar in that they have a broad base and a narrow top. The primary reason for this pattern is that __________

Which of the following statements about the movement of nutrients through an ecosystem is true? A. nutrients in the soil can be eaten and used directly by animals. B. an organism transfers only its energy to the organism that eats it C. a biogeochemical cycle is the path that an element takes as it moves form organism to organism D. carbon cycle betweem the atmosphere and living biomass.

True or false? Local biogeochemical cycles are isolated within their particular ecosystem and all ions and molecules remain in that ecosystem permanently.

Which area is not one of the three major reservoirs of the global carbon cycle? A. atmosphere B. sedimentary rock C. terrestrial ecosystems D. oceans

True or false? In the global carbon cycle, rivers link the terrestrial and marine reservoir of carbon, whereas carbon exchange between the atmosphere and the ocean is achieved by active transport.

How does carbon move from the biota to the atmosphere?

How have humans altered the global carbon cycle?

How do greenhouse gases contribute to global warming?

Nitrigying bacteria convert __________ to ___________

________ removes nitrogen form the atmosphere.

What is Assimilation?

What is Nitrification?

Denitrifying bacteria convert _______ to __________

__________ is a nitrate

_________ is a nitrite