| → rapid increase of many animals and plants during 1860 1861 1866 1869 1872 |
| effects of 1859 |
|
| → or when naturalised in a new country. 1860 1861 1866 |
| and by the results of naturalisation, as explained in the third chapter. 1859 |
| and when naturalised in a new country. 1869 |
| and when naturalised in new countries. 1872 |
|
| → 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 |
|
|
individuals and races, during the constantly-recurrent Struggle for Existence, we see
powerful and ever-acting
of
The struggle for existence inevitably follows from the high geometrical ratio of increase which is common to all organic beings. This high rate of increase is proved by
by the
→rapid increase of many animals and plants during
a succession of peculiar seasons,
→or when naturalised in a new country. More individuals are born than can possibly survive. A grain in the balance
determine which
shall live and which shall die,— which variety or species shall increase in number, and which shall decrease, or finally become extinct. As the
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
|
