Option A, The pressures of a hatchery environment and of the wild environment select for different traits.
The various pressures in wild environment include the competition for food and survival, threat of prey etc. The effect of domestication on salmon can also be a reason for its low productivity in wild environment. Some other factors that might have affected the regular productivity of salmon in wild environment include- captive rearing, inbreeding among close relatives and ability of some fish to adapt to the unique hatchery environment.
It is a wels catfish also called sheatfish it also looks like a catfish
the answer is False because his first law was every object will remain at rest or in a uniform motion in a straight line unless compelled to change its state by the action of an external Force
