The various beak sizes, shapes and foraging habits of Darwin's __________ were an important observation that contributed to Charles Darwin's development of his theory of evolution by natural selection.

Fill in the blank(s) with the appropriate word(s).


Finches

Biology & Microbiology

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When in the human body, Legionella pneumophila resides

A. in alveoli. B. in alveolar macrophages. C. in the lower intestinal tract. D. in the meninges.

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Darwin bred pigeons to have particular traits. Today people breed dogs, cats, horses, and other animals for the same reason. These activities illustrate

A) negative selection. B) positive selection. C) artificial selection. D) veterinary selection.

Biology & Microbiology

The last structure that air moves through in

mammals before entering the alveoli is(are) the a. larynx. b. bronchi. c. bronchioles. d. trachea. e. pharynx

Biology & Microbiology

Which of the photographs in the above figure

represents the gymnosperm? a. moss b. fern c. conifer d. monocot e. all of these

Biology & Microbiology