The human body contains structures that are needed for survival, or in the case of vestigial structures, were needed for survival. wisdom teeth, seen here, are vestigial third molars. human ancestors had larger jaws with more teeth. over thousands of years, man no longer needed the third molar, and they became the source of dental problems rather than an aid in survival. how does this vestigial structure support the theory of natural selection?

Research question: why are the carrots that grew on the left side of the garden larger than the carrots that grew on the right side of the garden? which hypothesis is based on this research question? a comparison of people with gardens to people without gardens will show who is likely to live longer. b. carrots are thought to be good for your eyesight and should be eaten regularly. c. carrots that are provided lots of sunlight grow to a larger size than carrots grown in the shade. d. eating fresh vegetables every day is a healthy thing to do.