1. What does destruction refer?

36. What is the most common way that nitrogen fixation occurs?
A) forest fires
B) fossil fuel combustion
C) nitrogen fixing bacteria
D) lightning
E) photosynthesis
37
. Choose the relevant example for “drivers” in DPSIR models.
A) Population, economy growth
B) Habitat change
C) Climate change
D) Habitat quality
E) Policy measures to reduce impact
38. What are the negative consequences of chemical pollution of cities:
A) soil deterioration
B) multi-storey construction waste generation
C) acid rains
D) decreasing the corrosion of building materials
E) increasing the recreational areas
39. What method is more effective for neutralizing harmful gases in atmospheric 
weather?
A) hemosorption
B) absorption
C) adsorption
D) catalytic neutralization
E) thermal burning
40. The movements of energy and nutrients through living systems are different 
because.
A) nutrients are lost as heat, energy is limited in the biosphere
B) energy flows in one direction and nutrients recycle
C) nutrients flow in one direction and energy recycles
D) energy forms chemical compounds and nutrients are lost as heat
E) energy is limited in the biosphere and nutrients are always available
41
. Identify the correct determination for “ecological stress factor”.
A) The conversion of nitrate to gaseous nitrogen; carried out by a few genera of free-living 
soil bacteria
B) The dense roof-forming vegetation, typically represented by the crowns of the trees; 
kelps, brown algae, can also form dense forest-like canopies

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C
) The number of organisms in a population, combining “intensity“ (density within 
inhabited are
as) and “prevalence“ (number and size of inhabited areas)
D) Changes in the form or behavior of an organism during life as a response to 
environmental stimuli
E) Occurs when a physical factor has an adverse impact on an ecosystem or its biotic 
components