Because the small cell is more agile and can move the nutrients and wastes more easily compared to a big cell
si, el estomago es como una bolsa elastica.
Local extinction is the disappearence of a species of ONLY a given area. Where as species extinction accounts for all areas. TOTAL extinction.
Hope this helps.
The answer that fits the blank provided above is STEROIDS. Steroids are fat-soluble signal molecules. This is one of the derivative compounds of cholesterol along with Vitamin D and bile salts. All steroid hormones are considered as a derivative of cholesterol. The answer for this would be option D.