On which of the following surfaces of permanent teeth is pit and fissure caries MOST likely to occur? A. Facial surfaces of maxi
llary first molars B. Lingual surfaces of maxillary first molars C. Facial surfaces of mandibular first premolars D. Lingual surfaces of mandibular first molars E. Proximal surfaces of mandibular incisors
If you do not have variations to be selected by natural or sexual selection on their superior abilities to survive and reproduce successfully then nothing can be naturally selected against the immediate environment.