Which of the following elements has two valence electrons?
A) Na
B) Mg
C) H
D) Ne
E) Li
B
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What are some of the ways in which desert plants have adapted to the conditions in which they live? What will be an ideal response?
Symbiosis is defined as ________.
A. the relationship between herbivores and the algae that they graze upon B. the grouping of organisms according to their ability to cope with exposure and water loss C. a relationship between animals living on a mud flat and their environment D. a close intimate relationship between two dissimilar organisms E. None of these is correct.
Mountains stand high compared to nearby plains. Which region, mountains or plains, do you predict will have the thicker crustal root? Please explain
What will be an ideal response?
In terms of pedogenic regimes, the process that results in an accumulation of humus overlaying a thick, water saturated layer of clay in cold, wet climates with poor drainage conditions is
A) laterization B) salinization. C) calcification. D) podzolization. E) gleization.