→ struggle 1859 1860 1861 1866 |
other hand the struggle 1869 1872 |
|
→ balance. 1859 1860 1861 1866 1869 |
long run, turn the balance. 1872 |
|
→ in most cases be 1859 1860 1861 1866 |
be in most cases 1869 1872 |
|
→ having 1859 1860 1861 |
the males having 1866 1869 1872 |
|
→ on the charms of the males; and the slightest 1859 1860 1861 |
on their charms; and the slighest 1866 |
charms; and a slight 1869 1872 |
|
→ that 1859 1860 1861 1866 |
to find that 1869 1872 |
|
→ the changed conditions of 1859 1860 1861 1866 |
OMIT 1869 1872 |
|
→ there are at least 1859 1860 1861 1866 |
species present 1869 1872 |
|
of the same species come in all respects into the closest competition with each other, the struggle will generally be most severe between them; it will be almost equally severe between the varieties of the same species, and next in severity between the species of the same genus.
the
→struggle
will often be
severe between
remote in the scale of nature. The slightest advantage in
at any age or during any season, over those with which
into competition, or better adaptation in however slight a degree to the surrounding physical conditions,
the
→balance.
|
|
With animals having separated
there will
→in most cases be
a struggle between the males for
of the females. The most vigorous
or those which have most successfully struggled with their conditions of life, will generally leave most progeny. But success will often depend on
→having
special
or means of defence, or
→on the charms of the males; and the slightest
advantage will lead to victory. |
|
As geology plainly proclaims that each land has undergone great physical changes, we might have expected
→that
organic beings
have varied under nature, in the same way as they
have varied under
→the changed conditions of
domestication. And if there
any variability under nature, it would be an unaccountable fact if natural selection
not come into play. It has often been asserted, but the assertion is
incapable of proof, that the amount of variation under nature is a strictly limited quantity. Man, though acting on external characters alone and often capriciously, can produce within a short period a great result by adding up mere individual differences in his domestic productions; and every one admits that
→there are at least
individual
But, besides such differences, all naturalists
|