into slightly hotter or colder, damper or drier districts. In this case we can clearly see that if we
wished wished 1859 1860 1861 1866 1869 | wish 1872 |
in imagination to give the plant the power of increasing in number, we should have to give it some advantage over its competitors, or over the animals which
preyed preyed 1859 1860 1861 1866 1869 | prey 1872 |
on it. On the confines of its geographical range, a change of constitution with respect to climate would clearly be an advantage to our plant; but we have reason to believe that only a few plants or animals range so far, that they are destroyed
by by 1859 1860 1861 1866 1869 | exclusively by 1872 |
the rigour of the
climate climate 1859 1860 1861 1866 1869 | climate. 1872 |
alone. alone. 1859 1860 1861 1866 1869 | alone. 1872 |
Not until we reach the extreme confines of life, in the
arctic arctic 1859 | Arctic 1860 1861 1866 1869 1872 |
regions or on the borders of an utter desert, will competition cease. The land may be extremely cold or dry, yet there will be competition between some few species, or between the individuals of the same species, for the warmest or dampest spots. |
|
Hence, Hence, 1859 1860 1861 1866 1869 | Hence 1872 |
also, also, 1859 1860 1861 1866 1869 | also, 1872 |
we can see that when a plant or animal is placed in a new country amongst new competitors,
though though 1859 1860 1861 1866 1869 | though 1872 |
the
climate may be exactly the same as in its former home, yet the climate may be exactly the same as in its former home, yet the 1859 1860 1861 1866 1869 |
OMIT 1872 |
conditions of its life will generally be changed in an essential
manner. manner. 1859 1860 1861 1866 1869 |
manner, although the climate may be exactly the same as in its former home. 1872 |
If
we wished to increase we wished to increase 1859 1860 1861 1866 1869 |
OMIT 1872 |
its average numbers
in in 1859 1860 1861 1866 1869 |
are to increase in 1872 |
its new home, we should have to modify it in a different way to what we should have
done done 1859 1860 |
to do 1861 1866 1869 |
had to do 1872 |
in its native country; for we should have to give it some advantage over a different set of competitors or enemies. |
|
It is good thus to try in
our our 1859 1860 1861 1866 | our 1869 1872 |
imagination to give
any form some any form some 1859 1860 1861 1866 1869 |
to any one species an 1872 |
advantage over another. Probably in no single instance should we know what to
do, so as to succeed. do, so as to succeed. 1859 1860 1861 1866 1869 |
do. 1872 |
It will It will 1859 1860 1861 1866 1869 |
This ought to 1872 |
convince us of our ignorance on the mutual relations of all organic beings; a conviction as necessary, as it
seems to be seems to be 1859 1860 1861 |
seems 1866 1869 |
is 1872 |
difficult to acquire. All that we can do, is to keep steadily in mind that each organic being is striving to increase
at at 1859 1860 | in 1861 1866 1869 1872 |
a geometrical
|