Which of the following elements has six valence electrons?
A) Be
B) B
C) C
D) N
E) O
E
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Population in Russia
A) is largely clustered west of the Ural Mountains B) decreases in density as you travel from east to west C) has largely remained rural into the 21st century D) tends to be coastal, with significant concentrations along both the Arctic and Pacific coastlines E) is mainly found along the frontier with China
Which of the following was NOT true of early settlements?
A) They contained society's schools, museums, libraries and archives. B) They housed women and children while the men searched for food. C) They protected the group's land claims and food sources. D) They were often surrounded by defensive walls.
The Himalaya Mountains are no longer tectonically active. Indicate whether the statement is true or false
Which of the following is a topic of research in conservation biogeography?
A) The distribution and effects of invasive species. B) The effects of climate change on biodiversity. C) Conservation planning and the establishment of protected areas. D) Invasive species, climate change, and conservation planning are all topics of research in conservation biology.