Why do all birds have beaks and characteristic feet?

Function exceeds survival advantage. However, it becomes mind boggling when you include other required structures for eye function, such as transparent membranes, neural networks to process information, lens structures with both transparency and flexibility for focusing, secretion of internal clear fluid that both nourishes structures and provides shape to the eye, meshworks that precisely drain fluid away to maintain an acceptable pressure, muscles to control pupillary size and focusing, etc. Yet people do still actively deny evolution occurs. Each of these components would require separate yet simultaneous evolution, separate yet simultaneous significant survival advantages, and separate yet simultaneous lack of interference with the eye and with other structures of the organism that would reduce survival advantage. A Bonnier Corporation Company.

it is simply impossible for many of the features that present in organism today to have spontaneously arisen. Some examples of some non-stick cookware are All clad, Fissler, and Lodge.

... a classic example is the way that some human populations gained genes for lactose tolerance following the onset of … Is there any evolutionary, natural selection reason that the human eye should have this ability? There are examples in living organisms of complex information systems being present on a molecular, or genetic, level which are encoded in a fashion that bears no resemblance to the final products that are being coded for. Well, it is well-known that virtually none of these transitional organisms have been found in the fossil record, and alleged transitional forms (archaeopteryx and Pakicetus, for example) have been refuted as transitional forms. Here the “theory of evolution” refers to the “contemporary evolutionary theory”, “modern evolutionary synthesis” or “Neo-Darwinism”, where: Evolution is the change in the inherited characteristics of biological populations over successive generations.

What evolutionary force drove this exceptional color vision in humans, mating rituals and being able to distinguish poisonous from non-poisonous berries? It would be extremely advantageous for animals to have retained photosynthesis, or to have “evolved” this separately, as an alternative food source. One can observe the similarities and differences between organisms and categorize them, and can even speculate that one organism may have arisen (evolved) from another organism. Clearly, not all of these factors are always ideal. 12 examples of evolution happening right now. It would be extremely advantageous for all land animals to have evolved enhanced kidney function such as that found in kangaroo rats, which allow them to excrete waste material with much less water usage. But it is still that kind of organism. However, for a complex structure or metabolic pathway to form, evolutionary theory and natural selection require that there be incremental steps leading up to this development. In the scheme of things, life is extremely fragile. For example, is there really any survival advantage for butterflies and tropical fish to possess such a wide pallet of colors and shapes?