Darwin's theory [please help]?

Question

"the nonconstancy of species" can somebody give one example of suporting evidence?

Answer 1

You asked for one example, but here are several:

The fact that you need a different flu shot every year. This is caused by the non-constancy of the flu viruses. This years flu viruses are resistant to last year's flu shot.

Similarly, we have samples of old strains of the tuberculosis bacterium, and we can literally see the DNA differences in the strains of TB bacteria we have today, evidence of the "non-constancy" of the tuberculosis bacterium.

More examples:

Chihuahuas and Great Danes. All dog breeds are the result of manipulation of the non-constancy of the dog species (Canis lupus). Yes dog breeding is the result of direct human intervention in setting up breeding pairs ... but if species were "constant", then it wouldn't matter what human breeders did, the dogs would always come out the same.

Same with breeding cats, cows, dairy goats, orchids, or watermelons. All breeding programs DEPEND on the "non-constancy of species."

Answer 2

Fossil records supports the nonconstancy of species over time, or vertical evolution, and biogeographical observations support the nonconstancy of species in space, or horizontal evolution.
Darwin’s conclusions on the evidence presented by the fossil record can be summarised as follows:
• All fossils can be fitted into the existing Linnaean classification scheme, which indicates a long history of taxonomic groups, with very little complete innovation, as might be expected if each species was created independently.
• In general, the older a fossil is, the more it differs from modern species. This observation supports an interpretation of a long and gradual process of evolution, with increasing similarity to modern species.
• Fossils from consecutive rock formations are more similar to each other than are fossils from more distant formations. This phenomenon demonstrates that fossils in consecutive rock formations form an evolutionary sequence, with those in the more recent rock formations having evolved from those in the preceding rock formation.
• The recent fossils of a particular geographic area resemble modern species of that area. An explanation for this phenomenon is that modern species have evolved from the extinct species.

Answer 3

The universality of the genetic code. All organisms are linked by this code, yet vary in expression of this code. Species is a human concept; meaning each species is distinct. Nature knows, species and variant are the same thing. Ring species bring this concept into sharp relief. A salamander species rings the Californian Central Valley. All along the line of the species, the various organisms interbreed. But, as you meet the end of the line, in the south of the valley, the two ends of the salamander ring no longer interbreed; thus meeting the criteria for " biological species ".

Answer 4

tadpole = frog

google the Leakey (spell?) in their African archeology. The origin of man has been traced back over 20,000 years to before man walked upright

have you ever googled darwin and followed the stream of consciousness ... the proof is overwhelming.

And just to set you straight. I am a Catholic. I believe deeply that God did create a higher level of mammal, namely man, with a difference from all other forms of animal life: the ability to reason. However, it took many millenia for that form of life to develop the reasoning ability.

God bestows. Man develops ... Man seeks Excellence. God provides perfection.