On the Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for LifeD. Appleton, 1909 - 430ÆäÀÌÁö |
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76 ÆäÀÌÁö
... advantage of plumed seeds no doubt stands in the closest relation to the land being already thickly clothed by other plants ; so that the seeds may be widely distributed and fall on unoccu- pied ground . In the water - beetle , the ...
... advantage of plumed seeds no doubt stands in the closest relation to the land being already thickly clothed by other plants ; so that the seeds may be widely distributed and fall on unoccu- pied ground . In the water - beetle , the ...
77 ÆäÀÌÁö
... advantage over a different set of competitors or enemies . It is good thus to try in our imagination to give any form some advantage over another . Probably in no single instance should we know what to do , so as to succeed . It will ...
... advantage over a different set of competitors or enemies . It is good thus to try in our imagination to give any form some advantage over another . Probably in no single instance should we know what to do , so as to succeed . It will ...
79 ÆäÀÌÁö
... advantage , however slight , over others , would have the best chance of surviving and of procreating their kind ? On the other hand , we may feel sure that any variation in the least degree injurious would be rigidly destroyed . This ...
... advantage , however slight , over others , would have the best chance of surviving and of procreating their kind ? On the other hand , we may feel sure that any variation in the least degree injurious would be rigidly destroyed . This ...
81 ÆäÀÌÁö
... advantage over others ; and still further modifications of the same kind would often still further increase the advantage , as long as the being continued under the same conditions of life and profited by similar means of subsistence ...
... advantage over others ; and still further modifications of the same kind would often still further increase the advantage , as long as the being continued under the same conditions of life and profited by similar means of subsistence ...
83 ÆäÀÌÁö
... advantage over other males , in their weapons , means of defence , or charms ; and have transmitted these advantages to their male offspring . Yet , I would not wish to attribute all such sexual differences to this agency for we see ...
... advantage over other males , in their weapons , means of defence , or charms ; and have transmitted these advantages to their male offspring . Yet , I would not wish to attribute all such sexual differences to this agency for we see ...
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accumulated adapted affinities allied species America analogous ancient animals appear archipelago become bees believe birds breeds cause cells characters cirripedes climate closely allied colour continuous crossed crustaceans degree difficulty distinct species divergence domestic doubt embryo endemic existing exterminated extinct extremely facts favourable fertilised fertility flowers formations forms fossil Gärtner genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hybrids hybrids produced important increase individuals inhabitants inherited insects instance instincts intercrossing intermediate larv©¡ laws less living males mammals manner migration modification modified descendants natural selection naturalists nearly nest occasionally offspring organic organisation origin of species perfect pigeons plants pollen present principle probably produced progenitor ranked reciprocal crosses remarked resemble rock-pigeon rudimentary seeds sexual sexual selection Silurian slight sometimes South America sterility structure struggle successive supposed swimbladder tend theory variability variations varieties vary whole widely