Answer: Its D
Explanation: Thats the 2nd ffrom final step from letting out wasts
The fern is a popular seedless vascular plant.
Edward Jenner first "discovered" a vaccine for cowpox, which provided immunity for smallpox.
ATP or the Adenosine Triphosphate is referred to as the basic energy unit of the body. In the case of doing an exercise, what happens is that, the more someone increases his or her activity, the more energy is required and the body should compensate for this need. Therefore, the answer for this would be option D.