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1. The evolution of the peppered moth described is one of among the simple and
very good examples that provide a very clear and easy to understand
explanation of what is meant by natural selection. Such example of natural
selection can be easily understood by any lay person or even young children.
Along with the natural selection, the pepper moth evolution also points out the
camouflage as one of the pressures of the natural selection. The color
darkening of the peppered moth was actually a response to pollutants which
was termed as industrial melanism as the color darkening was from the loots
as industrial by-products.
2. The evolution of the Galapagos Penguins demonstrates how animals are
subject to the pressures of natural selection. The Galapagos penguins evolved
to have many differences as compared to the body shapes, characteristics,
behavior, and adaptations of the Penguins from the Antarctic. The Galapagos
Penguin evolution provides a very good example that point out the role of
environmental pressures on the evolution of certain animal species which are
pushed to undergo the natural selection process. I think the smaller bodies and
less fat on the bodies of the Galapagos Penguins are mainly caused by less
food to eat and of course for the species to adapt to warmer weather such body
changes provide great advantage and the best advantage is making their
survival possible in such a very different environment.
3.
Galapagos finches which entered the Galapagos Islands evolved unique
species in every island. The finches came into the island because of the unique
opportunities. As every island in Galapagos have differing unfilled niches
providing varying evolutionary pressures, evolution of different finches
evolved Adaptation based on availability of foods greatly affects the evolution
of the beaks. When foods available in the environment became scarce, most
foods available were larger in size which caused the development of larger
beaks of some finches evolving into a different species. The evolution of the
finches was rapid and filled the island with different species in short time. The
spread of the different finch species in Galapagos provides a good explanation
of adaptive radiation as natural selection.
4. Fossils provide very good information that explains the evolutionary changes
that took place particularly on the earlier periods dating back even to the time
before the known human existence. The evolution of the different animas such
birds as studied according to fossils will not only provide information about
the natural selection but also helps to trace back the ancestors of certain
species. The actual effects of natural selection are currently observable but
information on what really occurred during the past is best provided by
studying the fossils. Studying the natural selection that occurred in birds
through the study of fossils is very interesting.
5.
Evolution by natural selection through the study of fossils is truly amazing
allows to study the amazing events that could take place billion of years ago.
The modernizing society has found many other factors to be studied that can
provide information about the evolution of certain species. However, fossils
which could had occurred dating billions or trillions of years back can still
provide very good information. Unlike the genetic or molecular evidences,
fossils are must better as fossils can even make it possible to see the actual
shape of the structure from unseen creatures which could have just occurred
through imagination. It also provides best information on the evolution of
species through natural selection.
6. Fossils definitely are best sources that provide supporting information on the
theory of evolution by natural selection... The advantage possessed by the
fossils is that it can stay for very long period of time. They may be embedded
in rocks on seabeds but it remains to provide good information as to what is
being fossilized. Because of fossils, humans are able to give description how
dinosaurs could probably look like and that could be very impossible if only
genetics or molecular evidences are studied. Through fossils, theory on how
different species changed their shapes and structure as the years went by were
explained. The speculation that some birds evolved from dinosaur through the
study of fossils is quite amazing but who knows, someday a fossil that can
strongly support the theory may prove it true.