D is the best answer
(I am just using my common sense)
Hope I helped :)
B. law of conservation of mass
This is why the total amount of and element before and after a chemical reaction is constant.
Answer:
Natural selection is the process whereby organisms better adapted to their environment tend to survive and produce more offspring. The theory of its action was first fully expounded by Charles Darwin and is now believed to be the main process that brings about evolution while Artificial selection is Selective breeding is the process by which humans use animal breeding and plant breeding to selectively develop particular phenotypic traits by choosing which typically animal or plant males and females will sexually reproduce and have offspring together.
A D B A C D D A C B B A D
