SCSC 301
Texas A&M University
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SCSC 301 Practice Exam Questions And Answers With Complete Solutions
- Exam (elaborations) • 13 pages • 2023
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SCSC 301 Practice Exam Questions And Answers With Complete Solutions
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SCSC 301 Exam 2 Questions And Answers With Complete Solutions
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SCSC 301 Exam 2 Questions And Answers With Complete Solutions
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SCSC 301 TAMU Test 1 (Soil Science Test 1 Notes Set) Questions With Complete Solutions
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Principle Components of Soil -Air 25% 
-Water 25% 
^ (healthy soil composition, those two vary from 50-0% to 0-50%) 
-minerals ~45% 
-Organics ~5% (again healthy soil it varies) 
 
% are by volume not mass 
 
Soil Dynamic natural body having properties due to the combined effects of climate and biota as modified by relief acting on parent material over time. 
 
5 thing that affect soil Active: 
-climate 
-biota 
Passive: 
-parent material 
-time 
Modifying: 
-relief (topography) 
 
Bios...
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SCSC 301 Exam 1 Questions And Answers With Complete Solutions
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___________ is comparatively soluble in soil solution and therefore easily weathered. 
 
a. Hematite 
b. Apatite 
c. Feldspar 
d. Mica 
e. Gypsum correct answer: E. Gymsum 
 
Quartz _____. 
 
a. weathers to form clay minerals 
b. is resistant to weathering 
c. is soluble in soil solution 
d. is a phosphorus bearing mineral 
e. is a major component of the clay fraction correct answer: B. is resistant to weathering 
 
A pot of soil that is 30 cm tall and which has been wetted until excess water ...
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SCSC 301 TAMU Exam 2 Howe Questions With Complete Solutions
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Which of the following is NOT a carbon-containing compound that is involved in the cycling of carbon associated with most plant/animal life forms? correct answer: Calcium carbonate 
 
Which organic matter property affects the availability of nutrients to plants? correct answer: Cation exchange capacity 
 
Complete degradation of residues (complete oxidation) results in correct answer: CO2 
 
Which of the answers below represents an immobilized form of N? correct answer: Protein in a bacteria...
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Scsc 301 Exam 2 Questions And Answers
- Exam (elaborations) • 5 pages • 2023
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The subsoil horizon symbol for the zone of maximum eluviation is: correct answer: E 
 
The percent organic matter in soils increases as_____ decreases correct answer: Temperature 
 
The horizon that movement and accumulation of sodium is a microprocess essential to the occurrence of is: correct answer: Bn 
 
The epipedons that are thick with a dark color, low base status, and good structure are called: correct answer: Umbric 
 
In the soil forming macroprocess, the formation of clay minerals...
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SCSC 301 Exam 1 Questions With Complete Solutions
- Exam (elaborations) • 46 pages • 2023
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SCSC 301 Exam 1 Questions With Complete Solutions
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SCSC 301 Exam 3 Questions With Complete Solutions
- Exam (elaborations) • 5 pages • 2023
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An important function of micro-organisms in soils is the fixation of correct answer: Nitrogen 
 
The well decomposed organic matter in the soil that is composed of ligno-proteins and contributes to the cation exchange capacity is: correct answer: Humus 
 
Bacteria are important to the decomposition of residues : correct answer: Under slightly acid to neutral conditions 
 
Assuming favorable climatic and soil environment conditions, the factor most often controlling the rate of residue decompo...
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SCSC 301 Exam 2 Questions With Complete Solutions
- Exam (elaborations) • 45 pages • 2023
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What are the 3 domains of life? correct answer: Archaea, Bacteria, Eukarya 
 
What is a soil micro biome? correct answer: A representation of all 3 domains of life ie. microbial community 
 
Which domain of life is being described: 
 
- Methanogens 
- Extremophiles 
- Oldest known organisms correct answer: ARCHAEA 
 
Which domain of life is being described: 
 
- Cyanobacteria (photosynthetic, O2) 
- Eubacteria (true) 
- Abundant and diverse correct answer: BACTERIA 
 
Which domain of lif...
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Scsc 301 Exam 4 Questions With Complete Solutions
- Exam (elaborations) • 5 pages • 2023
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A soil having a pH of 8.0, 10% exchangeable sodium, and 5d/sm conductivity is: correct answer: saline, non sodic 
 
the most common means of decreasing the soil pH from 7 to 4.5 in non calcareous soil is by the addition of: correct answer: Ferrous sulfate 
 
With the passage of time, the soil pH tends to: correct answer: decrease 
 
A compound that is recommended to be used as an agricultural liming material is: correct answer: CaMg(Co3)2 
 
Calcium Carbonate reacts with the carbonic acid in...
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