What can be learned from a soil's color?
What will be an ideal response?
Answer: The color is the result of chemical processes which become more or less common as the soil forming factors vary. Often color does not infer fertility, as some of the fresh Andisols which are black and infertile prove. Reds indicate oxidation, greys and blues indicate poor drainage and saturation of the medium for part of the year, and so on.
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Age-sex pyramids can be constructed for any population, from those of counties and cities to populations of countries and continents
Indicate whether this statement is true or false.
Carbon-14 has eight ________.
A. neutrons B. nuclei C. isotopes D. protons E. atoms
In terms of geologic time, Earth is currently in the ____
a. Mesozoic Era b. Paleozoic Era c. Cenozoic Era d. Tertiary Period
Why did the government become concerned about the quality of life of residents of Newfoundland's outport settlements in the mid-20th century?
What will be an ideal response?