TLS Online TPP Program
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TLS Online TPP Program
#Question id: 12426
#Unit 10. Ecological Principles
In an ecosystem, fixed carbon has accumulated in the form of organic matter derived from dead plants and animals. Which of the following is the best explanation for this observation?
TLS Online TPP Program
#Question id: 12427
#Unit 10. Ecological Principles
Trophic efficiency is
TLS Online TPP Program
#Question id: 12428
#Unit 10. Ecological Principles
Flycatcher birds that migrate from Africa to Europe feed their nestlings mostly with moth caterpillars. The data presented show the mean dates of egg laying, hatching, and fledging of flycatcher young, and the 1980 and 2000 peak mass of caterpillars.
Why are ecologists concerned about the shift in date from May 28 in 1980 to May 15 in 2000 of the caterpillar peak mass?
TLS Online TPP Program
#Question id: 12429
#Unit 10. Ecological Principles
Flycatcher birds that migrate from Africa to Europe feed their nestlings mostly with moth caterpillars. The data presented show the mean dates of egg laying, hatching, and fledging of flycatcher young, and the 1980 and 2000 peak mass of caterpillars.
Which of the following organisms is incorrectly paired with its trophic level?
TLS Online TPP Program
#Question id: 12430
#Unit 10. Ecological Principles
Which of these ecosystems has the lowest net primary production per square meter?
TLS Online TPP Program
#Question id: 12431
#Unit 10. Ecological Principles
Nitrifying bacteria participate in the nitrogen cycle mainly by