The length of a food chain is limited by the efficiency of the energy transfer along the chain. According to the Energetic hypothesis, what is the percentage of the energy stored in the organic matter of each trophic level that is converted to organic matter at the next trophic level. 10% 20% 50% None of these answers Among the four statements which ones reflect density-dependent regulation of population size? 1. A population of mice in a barn declines because a farmer has acquired two cats. 2. Mosquitos disappear from an area after the first frost. 3. A lethal virus spreads more rapidly in cities than in rural areas. 4. Winds from a hurricane breaks down all the willow trees on the shore of a lake.

The length of a food chain is limited by the efficiency of the energy transfer along the chain. According to the Energetic hypothesis, what is the percentage of the energy stored in the organic matter of each trophic level that is converted to organic matter at the next trophic level. 10% 20% 50% None of these answers Among the four statements which ones reflect density-dependent regulation of population size? 1. A population of mice in a barn declines because a farmer has acquired two cats. 2. Mosquitos disappear from an area after the first frost. 3. A lethal virus spreads more rapidly in cities than in rural areas. 4. Winds from a hurricane breaks down all the willow trees on the shore of a lake.

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter40: Population Ecology

Section: Chapter Questions

Problem 13SA

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