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5: אנרגיה, תחזוקה והחלפת סביבה

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    ביחידה 5 התלמידים מגלים את האינטראקציה בין מערכות הגוף והסביבה החיצונית לחילופי חומרים, לכידת אנרגיה, שחרור פסולת ותחזוקה כוללת של המערכות הפנימיות המסדירות את ההחלפה. ההסברים והאיורים מתמקדים במיוחד באופן שבו מבנה מתייחס לתפקוד.

    תמונה ממוזערת: תמונה זו מציגה חתך רוחב של כליה. (CC BY-SA 3.0; הולי פישר/ויקיפדיה).


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