Conservation is the preservation or efficient use of resources (in an efficient or ethical manner), or the conservation of various quantities under physical laws.
How water interacts with different elements around it, such as soil, ice and structures, can reveal much about evolving climate patterns and help find ways to address global warming.
EN 
CS
DE
ES
FR
HU
IT
PL
PT
РУ
SK
TR
УК
AR
中文
