conservation

the conservation of energy

the law of conservation of mass

conservation of areas of upland.

uninformed criticism of conservation projects.

a new scheme for power conservation;

"However, conservation alone is not the answer."

Some accommodation between conservation and tourism is essential.

Conservation of water is of great importance in desert areas.

Soil conservation is intended to kurb erosion.

an all-out sprint; an all-out conservation program.

energy conservation; energy efficiency; an energy czar.

consonance between conservation measures and existing agricultural practice.

There is a need for the conservation of trees, or there will soon be no forests.

In re-using this old paper I’m doing my bit for conservation of the rain forests.

He established a national energy policy that included conservation, price decontrol, and new technology.

Study of metapopulation dynamics is one of the most important subjects in modern conservation biology and ecology.

James Wong is a Kew-trained ethnobotanist and works for Botanic Gardens Conservation International, the world's largest plant conservation network.

Outer wall adopt environmental protection energy-conservation " good stone very " new material, construct and adopt the " chop the axinite " craft.