Hydrogen Technologies

Question 1

Detritus feeders and decomposers are most likely found in the:

a.E and B horizon

b.A and O horizon

c.B and C horizon

d.C and E horizo

Question 2

Severe wildfires followed by heavy rains have significantly eroded the soil of a formerly forested region. Which one of the following horizons is most likely intact with little disturbance?

a.A horizon

b.O horizon

c.E horizon

d.C horizon

Question 3

Compared to inorganic fertilizers, organic fertilizers such as

a.cow manure applied to a field increase the chances of nutrient leaching.

b.cow manure applied to a field reduce the chances of nutrient leaching.

c.liquid ammonia sprayed on a field decrease the chances of nutrient leaching.

d.liquid ammonia sprayed on a field increase the formation of humus.

Question 4

The future worldwide use of irrigation:

a.is expected to double in the next 20 years due to increasing demands for food

b.is limited by the availability of freshwater, waterlogging, and salinization of soils

c.depends on new technologies to extract more groundwater

d.will require increased reliance on new hydrogen technologies to produce freshwater