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Dinesh

Dinesh club

Posted: 07 Aug 2023

Taken: 07 Aug 2023

1 favorite     3 comments    112 visits

Keywords

Image/Excerpt •
On the Origin of Species •
Charles Darwin •
150th anniversary •
Published •
2008 •

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Disuse of organs

Disuse of organs
Cassowary, a flightless bird (related to the Ostrich) found in Australia and New Guinea. Why did God create birds with nonfunctional wings?

Nouchetdu38 has particularly liked this photo

Comments
 Dinesh
Dinesh club
Effects of Use and Disuse:

. . . . I think there can be little doubt that use of our domestic animals strengthens and enlarges certain parts, and disuse diminishes them; and tht such modifications are inherited. Under frenature, we can have no standard of comparison, by which to judge the effects of long-continued by the effects of disuse. . . . . As the larger ground-feeding birds seldom take flight except to escape danger, I believe that the nerly wingless condition of several birds, which now inhabit or have lately inhabited several oceanis islands, tenanted by no beast of prey, has been caused by disuse. The ostrich indeed inhabits continents and is exposed to danger from which it cannot escape by flight, but by kicking it can defend itself from enemies, as well as any of the smaller quadrupeds. . . . Page 150
2 years ago.
 Dinesh
Dinesh club
On the ORIGIN 0f SPECIES
2 years ago.

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