The correct answer is "Advantageous traits become more common in each subsequent generation".
Explanation:
Natural selection is the process at which evolution is based on, which consist of the organisms having advantageous traits are more likely to survive. This is known as survival of the fittest, and if a marine organism is analyzed during its evolutionary tree, it will be noticed that advantageous traits become more common in each subsequent generation. This evidence supports natural selection and predicts that it is continually happening in the marine environment.
Bears sweat during hibernation because of their fur. Their sweat is actually very valuable in chinese traditional medicine so that could be a problem I guess. I hope this helps.
Abstract. The use of antibiotics in food animals selects for bacteria resistant to antibiotics used in humans, and these might spread via the food to humans and cause human infection, hence the banning of growth-promoters.
