The partial pressure of CO2 in the soil pores is higher than the partial pressure of this gas in the ...

The partial pressure of CO2 in the soil pores is higher than the partial pressure of this gas in the atmosphere.
 
  Indicate whether the statement is true or false

Question 2

The great bulk of gaseous interchange between the soil pores and the atmosphere occurs by mass flow of the concerned gases.
 
  Indicate whether the statement is true or false

Question 3

In which of the following horizons has the process of illuviation most likely occurred?
 
  A) A horizon B) B horizon C) C horizon D) O horizon E) E horizon

Question 4

A wildlife biologist in South Africa notes that the soils on south-facing slopes are wetter and deeper than those on north-facing slopes, and therefore support more wildlife. What likely accounts for this difference?
 
  A) higher soil temperatures on the north slopes
  B) more rapid plant growth on the south slopes
  C) sandier soils on the north slopes
  D) differences in rainfall from one area to another
  E) more solar radiation on the south slopes

Question 5

Three rows of tomatoes were given different mulching treatments. Which of the following would result in the hottest soil in summer?
 
  A) clear plastic mulch
  B) black plastic mulch
  C) straw mulch
  D) no mulchbare soil
  E) no mulchliving grass

Question 6

The primary characteristic of subsoils that accounts for the ability of ground circulating heat pumps to moderate temperatures in houses in both summer and winter is ________.
 
  A) the high specific heat of the soil
  B) the ready conduction of heat in the soil
  C) the high heat of the evapotranspiration
  D) the high redox potential of the soil
  E) the low oxygen content of the subsoil