conservation
noun [ U ]
ENVIRONMENT, SOCIAL RESPONSIBILITY uk/ˌkɒnsəˈveɪʃən/ usthe process of using water, gas, electricity, etc. carefully in order not to waste it:
The main objectives are the conservation of materials and energy in support of the sustainable development program.
energy/water conservation
the protection of the environment:
nature/environmental conservation
It is now considered essential for any new fish-farming businesses to consult the relevant conservation agency.