Which process is critical in the migration of iron and aluminum from A to B horizons in soils?
a. fixation
b. chelation
c. solution
d. ion exchange
b
Environmental & Atmospheric Sciences
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The combination of Belgium, the Netherlands, and Luxembourg is called __________________.
Fill in the blank(s) with the appropriate word(s).
Environmental & Atmospheric Sciences
Who was able to prove that there was not an actual continent in the Arctic?
A) John Murray B) Fridtjof Nansen C) Robert E. Peary D) Charles Wyville Thomson
Environmental & Atmospheric Sciences
List three common cements. How might each be identified?
What will be an ideal response?
Environmental & Atmospheric Sciences
What is the largest danger to the Russian economy?
a. effects of global warming b. excessive dependence on imports of natural resources c. high percentage of income used to fund the military d. excessive dependence on exports of natural resources e. high unemployment
Environmental & Atmospheric Sciences