Māris kļaviņŠ, azamat azizov, JĀnis zaļoksnis environment, pollution, development: the case of uzbekistan

Figure 4.1. 
Earth viewed 
from space

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44 
ENVIRONMENT, POLLUTION, DEVELOPMENT:  THE CASE OF UZBEKISTAN
hand, it is an open system with respect to the flows of energy (the 
Earth receives energy from the Sun and reflects part of the received 
energy  into  outer  space).  A  characteristic  feature  of  systems  is 
their  capability  to  react  on  various  influences  –  feedback,  which 
can be positive or negative. This feedback or counteraction is auto-
regulative  –  it  stabilises  the  system,  maintains  it  in  a  relatively 
constant state. The feedback is positive when an impact on the 
system results in a further enhancement of the system’s activity.