If replicating bacteria are given a short pulse of radiolabeled thymidine and rapidly killed, the radiolabel shows up as:

TLS Online TPP Program

#Question id: 12465

#Unit 10. Ecological Principles

Which statement best describes what ultimately happens to the chemical energy that is not converted to new biomass in the process of energy transfer between trophic levels in an ecosystem?

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#Question id: 12533

#Unit 10. Ecological Principles

If the flow of energy in an arctic ecosystem goes through a simple food chain, perhaps involving humans, starts from seaweeds to fish to seals to polar bears, then which of the following could be true?

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#Question id: 12534

#Unit 10. Ecological Principles

Which of the following statements is correct about biogeochemical cycling?

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#Question id: 12535

#Unit 10. Ecological Principles

If you were tracking a nutrient molecule through an ecosystem, which of the following statements would you expect to verify?

TLS Online TPP Program

#Question id: 12536

#Unit 10. Ecological Principles

Which of the following properly links the nutrient to its reservoir?

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#Question id: 12537

#Unit 10. Ecological Principles

In terms of nutrient cycling, why does timber harvesting in a temperate forest cause less ecological devastation than timber harvesting in tropical rain forests?