3. In 1839, Matthias Schleiden, a German botanist, published research showing that a cell's nucleus plays a part in its reproduction. In 1858, Rudolf Virchow, a German biologist, published research showing that all cells come from preexisting cells. Which of the following bestdescribes how the two scientists' discoveries influenced cell theory?A. The two scientists' discoveries helped cell theory become more accurate. B. The two scientists' discoveries helped to simplify cell theory. C. The two scientists' discoveries helped to complicate future discoveries. D. The two scientists' discoveries helpedto debunk cell theory

explanation:

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.