The answer is option D. We have no way of knowing the number of revolutions of the planets.
I'm not sure if this is a multiple choice question. But, my answer would probably have to be, feces. When an animal passes foods, it adds nutrients to the earth, and when plants die they also go into the earth to help fortify and regurgitate it. Hope this helps. :D
Answer:
B. This is asexual reproduction
Explanation; When a cell divides to make two cells, a 'mother' and 'daughter' cell it is asexual reproduction, it only takes one cell to make more. Sexual reproduction needs two organisms to make another, whereas asexual reproduction only needs one.
Budding and Fragmentation are not forms of reproduction so they are not the answers.