The percentages of which soil components represent the minimum ...

[lbcchick]

The percentages of which soil components represent the minimum information necessary in order to determine the textural class of a soil?
 
  A) gravel and sand
  B) clay and organic matter
  C) sand, silt and clay
  D) silt and sand
  E) clay, water and air

Question 2

If a dry soil high in certain types of ________ is moistened, it is likely to swell up with enough force to crack pavements and building foundations.
 
  A) silt
  B) iron
  C) clay
  D) humus
  E) any of the above

[maya.nigrin17@yahoo.com]

Answer to Question 1

D

Answer to Question 2

C

[lbcchick]

TYSM

[patma1981]

Gracias!