Which of the following represents the correct organization of ecological systems from the lowest to the highest level of organization?
A) individual, biome, biosphere, community, population, ecosystem
B) individual, community, population, ecosystem, biosphere, biome
C) individual, population, community, ecosystem, biome, biosphere
D) individual, population, community, biome, biosphere, ecosystem
C
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The sexual reproduction of earthworms characteristically is
A. hermaphroditic but cross-fertilizing. B. hermaphroditic but self-fertilizing. C. normal type between individuals who remain as males and females throughout their life time. D. normal appearing, but individuals change sex periodically. E. normal appearing, but individuals reproduce only once in their lives.
Which body system is least likely to be damaged by exposure to mercury?
a. Liver b. Skin c. Kidneys d. Brain e. Nervous system
Herbivores are unable to digest ________ and thus rely on the help of specialized bacteria and protozoa living in their digestive tracts
Fill in the blank(s) with correct word
If a chemical kills 85% of a population of fish, and 15% have genes to resist the chemical, the chemical is
A. an acquired characteristic. B. responsible for causing the genes to change. C. responsible for a gene frequency change. D. None of the answers is correct.