the phrase Darwin used to describe his board of evolution is______. all of life

Question

the phrase Darwin used to describe his board of evolution is______.

all of life is related through common ancestry, accounting for the _______of life.

The_____of life arises from the adaption of species to different habitats over long spans of time.

Darwin proposed a mechanism for how evolution occurs, which he called_______.

Two key observations underlying natural selection are that members of a population wary in their______ and that all species can produce more offspring than the environment can support.

Darwin inferred that those organisms with traits best suited to the environment tend to leave more _______than other member of a population.

The unequal reproduction in a population leads to gradual accumulation of_______to the environment.

vocab.

descent with modification

diversity

adaptions

natural selection

unity

inherited traits

offspring

Explanation / Answer

This actually is the phrase with which he referred to evolution, just another name for evolution. Descent with modification means descendants have been modified they have taken certain traits from their ancestors which have been "selected for" or have shown to provide an advantage in procreation. Evolution is the passing of selected traits to offspring, i.e. birds with stronger beaks break more nuts easier, eat more, are stronger, so they procreate more, so more birds in the population will now have stronger beaks, because the strong beak bird had the most offspring. So the new population is now "modified", or to phrase it as "decent with modification", the descendent's have become modified, they have changed to have stronger beaks. Darwin: "Darwin's work established evolutionary descent with modification as the dominant scientific explanation of diversification in nature" So Darwin used the above definition (the strong beak bird procreating more) as the main reason for different species in nature (a long beaked bird will get smaller nuts in hard to reach places and also procreate more, so there will now be a diversified ecosystem with long-beaked and hard-beaked birds). The reason there are different species, Darwin proposed, is because specific traits that make animals stronger and better are selected for and these different strings of different selected traits will continue to evolve until they are actually completely different species.

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