| → it 1859 1860 1861 1866 1869 |
| we have reason to believe that it 1872 |
|
| → through natural selection, of such differences, when beneficial to the individual, that 1859 1860 1861 1866 |
| through natural selection, of beneficial differences that has 1869 |
| of beneficial differences which has 1872 |
|
| → the more important 1859 1860 1861 1866 1872 |
| those 1869 |
|
| → by which the innumerable beings on the face of this earth are enabled to struggle with each other, and the best adapted to survive. 1859 1860 1861 1866 |
| which are the most important for the welfare of each species. 1869 |
| in relation to the habits of each species. 1872 |
|
|
to similar
naturally tend to present analogous variations,
these same species may occasionally revert to some of the characters of their ancient progenitors. Although new and important modifications may not arise from reversion and analogous
such modifications will add to the beautiful and harmonious diversity of nature. |
|
| Whatever the cause may be of each slight difference
the offspring
their
and a cause for each must
→it
is the steady
→through natural selection, of such differences, when beneficial to the individual, that
rise to all
→the more important
modifications of
→by which the innumerable beings on the face of this earth are enabled to struggle with each other, and the best adapted to survive.
|
