1. What does destruction refer?

113. The main driving force of hydrological cycle is:
A) Solar radiation

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B) Evaporation
C) Wind speed
D) Rainfall
E) Climate
114. What the synthetic fertilizers add to the soil?
A) Fixed nitrogen
B) Organic nitrogen
C) Nitrogen oxides
D) Rhizobium bacteria
E) Ammonium nitrate
115. 
Choose 
the 
correct 
definition 
for 
functional 
unit 
of 
ecosystem 
“decomposition”.
A) The energy captured from the sun flows from producers to consumers and then to 
decomposers and finally back to the environment
B) It is the process of breakdown of dead organic material. The top-soil is the major site for 
decomposition
C) It is the sequential process through which energy flows from one trophic level to 
another
D) It refers to the rate of biomass production
E) Process, at which intraspecific competition has reduced the per capita net rate of 
increase to zero (idealized) - or the crosspoint of natality and mortality patterns in a 
population
116. Which of the following can be predicted in analytical models?
A) Transfer of energy
B) Cycle of nutrients
C) Food chain
D) Relationship
E) Ecosystem dynamic
117. Which concept is about in a warming world the ice caps will melt, which 
reduces the Earth's albedo, we retain more of the sun's heat energy, and that 
accelerates warming which in turn melts more ice cap?
A) Residence time
B) Mass balance
C) Standing stock
D) Negative and positive feedback
E) Material flux rate
118. Organisms need nutrients in order to:

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A) Carry out essential life functions
B) Carry out nitrogen fixation
C) Recycle chemical compounds
D) Transpire carbon dioxide
E) Utilize hydrogen and oxygen