Human population growth fits an exponential pattern

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#Id: 2211

#XL - T Zoology

Darwin’s evolutionary theory- Evolution as such is the simple proposition that the characteristics of organisms change over time.

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#XL - T Zoology

Darwin’s evolutionary theory- Common descent

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#XL - T Zoology

Gradualism is Darwin’s proposition that the differences between even radically different organisms have evolved by small steps through intermediate forms,  not by leaps

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#Id: 2214

#XL - T Zoology

Populational change is Darwin’s hypothesis that evolution occurs by changes in the proportions (frequencies) of different variant kinds of individuals within a population.

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#Id: 3162

#XL - T Zoology

Natural selection was Darwin’s brilliant hypothesis, independently conceived by Wallace, that accounts for adaptations, features that appear “designed” to fit organisms to their environment.

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#Id: 3163

#XL - T Zoology

 Orthogenesis- “Straight-line evolution,” held that the variation that arises is directed toward fixed goals.