Answer: To populations!
Explanation: Evolution by natural selection is a process that takes several generations. We never say that individuals evolve. It's always populations that evolve.
Based on the choices above, the choice that is appropriate or a way of answering as to what toxicology is the first choice which reads that medicine substance that has an adverse effect on living organisms. It is because toxicology is the study of science that concerns with effects, nature and as well as poison in which base on the chosen choice, it talks more about the substances' effects.
D. A perfect flower is basically a male flower and a female flower because it has both male and female parts
