Bilingual Spanish jay

Natural Sciences 2º ESO

Archivo de Febrero 2014

Syllabus of “The reproduction function”

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Natural and sexual selection

“How does evolution happen? Through a gradual process called selection. Individuals that are better equipped to survive and reproduce pass those traits to their offspring. These “selected” changes accumulate over thousands of years. We tend to think of natural selection—”survival of the fittest”—but sexual selection works the same way and can be just as strong in shaping how species look and act”. (From birdsofparadiseproject.org)

Birds of paradise courtship dance

The birds-of-paradise are among the most beautiful creatures on earth—and an extraordinary example of evolutionary adaptation. On this site you can find what few have witnessed in the wild:

http://birdsofparadiseproject.org/

The respiratory system in human beings

Repasa y comprueba lo que sabes sobre el aparato respiratorio de los mamíferos (en este caso del ser humano):

(Picture from Wikipedia)

(Check the process where air travels in and out of the body, in this web by BBC).

(Check the process where air travels in and out of the body. Find out exactly how it works in this activity from BBC).

The circulatory system in human beings

Repasa y comprueba lo que sabes sobre el aparato circulatorio de los mamíferos (en este caso del ser humano):

(Check the components and the two circuits where blood travels through; pulmonary and systemic, in this web by BBC).

(Find out exactly how it works in this activity from BBC).

Pronunciation and definitions with pictures of animal circulation

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Esta película necesita Flash Player 7

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