The ecological efficiency of herbivores and carnivores is estimated by most authorities to be roughly ____

a. 1 percent
b. 10 percent
c. 30 percent
d. 60 percent
e. 90 percent


b

Environmental & Atmospheric Sciences

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A nation-state

A) must be recognized by the United Nations Security Council in order to be legitimate. B) rules a territory that contains all members of a nation. C) is very large in most cases. D) is a concept that was old by the time of the Roman Empire.

Environmental & Atmospheric Sciences

What are the focal depth ranges for shallow-focus, intermediate-focus, and deep-focus earthquakes? What will be an ideal response?

Environmental & Atmospheric Sciences

The concept of basic industries originally referred to

A) manufacturing. B) trapping. C) mining. D) services like police and firefighters. E) banking.

Environmental & Atmospheric Sciences

Which of the following is true of the reaction: 2 H(g) ? H2(g)?

A) It is endothermic. B) It is exothermic. C) It is neither endothermic nor exothermic. D) None of these, the reaction cannot occur.

Environmental & Atmospheric Sciences