His observations indicated that the size of the beaks of finches were responding to the ever changing environment. For instance, if the environment favored large nuts, finches born with powerful beaks capable of cracking them open would survive better than those with smaller beaks.
Within a population many individual do not survive
evidence in real time - finches fossil evidence evidence now backed up by genetics geological evidence of strata not just fossils
there were variations in the beaks already.
share a common ancestor and have evolved to adapt to different ecological niches on the islands. This observation provided evidence for Darwin's theory of evolution by natural selection.
Charles Darwin found that finches on the Galapagos Islands had variations in their beak shapes that were well-suited to the different types of food available on each island. This observation led him to develop his theory of natural selection as a driving force of evolution.
Variation
The finches: the theory was supported by when he visited the Galapagos islands and the finches were blown to another island and they had to adjust their beak size to live and eat.
Within a population many individual do not survive
evidence in real time - finches fossil evidence evidence now backed up by genetics geological evidence of strata not just fossils
there were variations in the beaks already.
share a common ancestor and have evolved to adapt to different ecological niches on the islands. This observation provided evidence for Darwin's theory of evolution by natural selection.
indirect observation
Observation of finches on the Galapagos Islands.
Charles Darwin found that finches on the Galapagos Islands had variations in their beak shapes that were well-suited to the different types of food available on each island. This observation led him to develop his theory of natural selection as a driving force of evolution.
Oxygen help the burning.
indirect observation
charles darwins hobbies are flying in the sky andtexting on his phone