The conservation policy saved the animals that were at risk.
Newton had divined the principle of the conservation of energy, so far as it belongs purely to mechanics.
From the earliest times the conservation of water has been one of the serious cares of the Arabs.
The beginnings of modern thermochemistry, though made independently of the doctrine of the conservation of energy, are practically contemporaneous with the recognition of that law, and without it the science could scarcely have reached the degree of development which it rapidly attained.
The closing of ventilators (accompanied by syringing and damping of surfaces to produce a humid atmosphere) has for its object the conservation of as much solar heat as practicable.