Which of the following correctly describes soil properties and processes? Select all that apply.

1.1.1
The correct combination is B. (i), (iii), and (iv).
Knowing the textural class of soil helps in choosing suitable crops, deciding on construction sites, and understanding chemical properties.

1.2

• 1.2.1 Monosaccharides: B applies to none (Monomers of proteins are amino acids).
• 1.2.2 Homogeneous: B applies to none (A homogeneous mixture can be separated by physical means).
• 1.2.3 Adhesion force: B applies to A only (Adhesion is the attraction between water and soil particles).
• 1.2.4 Soil texture triangle: B applies to none (The soil texture triangle is a chart, not a field method).
• 1.2.5 Aeration: B applies to A only (Aeration improves soil microbial activities by providing oxygen).

1.3

• 1.3.1 Unsaturated
• 1.3.2 Hygroscopic water
• 1.3.3 Virgin soil (or undisturbed soil)
• 1.3.4 Citric acid
• 1.3.5 Anion

1.4

• 1.4.1 Mass number
• 1.4.2 Base (The statement is already true with "base".)
• 1.4.3 Osmosis
• 1.4.4 C-horizon (or R-horizon)
• 1.4.5 Humus