Sentences with phrase «animals under natural conditions»

Not exact matches

Here's the rest of it:»... Reason tells me, that if numerous gradations from a simple and imperfect eye to one complex and perfect can be shown to exist, each grade being useful to its possessor, as is certainly the case; if further, the eye ever varies and the variations be inherited, as is likewise certainly the case; and if such variations should be useful to any animal under changing conditions of life, then the difficulty of believing that a perfect and complex eye could be formed by natural selection, though insuperable by our imagination, should not be considered as subversive of the theory.

Reason tells me, that if numerous gradations from a simple and imperfect eye to one complex and perfect can be shown to exist, each grade being useful to its possessor, as is certain the case; if further, the eye ever varies and the variations be inherited, as is likewise certainly the case; and if such variations should be useful to any animal under changing conditions of life, then the difficulty of believing that a perfect and complex eye could be formed by natural selection, should not be considered as subversive of the theory.»

Chickens are intelligent, inquisitive animals, but under farmed conditions they are unable to perform any of their natural behaviours like dust - bathing or building a nest, feeding or foraging.

Duke neuroscientist Lawrence Katz and graduate student Benjamin Rubin set out to develop a more natural method that would allow them to expose a single animal to many odors at different concentrations and under various conditions.

I am interested in ecological neuroscience: trying to understand the challenges of visual information processing that animals face under natural, evolution - relevant conditions.