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The trout body form is well adapted to many habitats. Fishes that live in relatively
quiet waters such as bays or lake shores or slow rivers usually are not strong, fast
swimmers but are capable of short, quick bursts of speed to escape a predator.
Artificial regeneration for the reforestation of clearings or the afforestation of bare
land usually begins with seed. A few trees, such as poplars (Populus species)
and willows (Salix species) can be more effectively increased by cuttings.
Calcium-ion (Ca”) concentrations are usually higher than the concentrations of
other cations. Sodium-ion- (Nao-) bearing minerals seem less reactive, and the
Na" concentrations are usually below those of Ca”. Minerals bearing magnesium
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This is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review