56)The human body contains structures that are needed for survival, or in the case of vestigial structures, were needed for survivalLWisdom 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 doesthis vestigial structure support the theory of natural selection?htingThe size of man's cranial cavity evolved. With increased cranial cavity size,the size of man's brain also grew. This resulted in a smaller jaw and no14A)room for the third molars.Agriculture and the use of fire changed what and how man ate andneed for these teeth diminished over time. Jaw size and shaped evolvedand there was insufficient room for the third molars.heB)The climate on Earth changed from very cold to tropical The tropicalclimate on Earth lead to a change in the diet of humans and that lead tothe need for sharp, pointed teeth rather than molars.C)The third molars erupt in the mouth later in the life of a human. As the Lifespan of human ancestors increased, the need for these third molarsdecreased. Man was able to Live a longer Life without the molars.D)

Wisdom teeth are the third and final set of molars that most people get in their late teens or early…

56) 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? The size of man's cranial cavity evolved. With increased cranial cavity size, the size of man's brain also grew. This resulted in a smaller jaw and no room for the third molars. A) Agriculture and the use of fire changed what and how man ate and the need for these teeth diminished over time. Jaw size and shaped evolved B) and there was insufficient room for the third molars. The climate on Earth changed from very cold to tropical The tropical climate on Earth lead to a change in the diet of humans and that lead to the need for sharp, pointed teeth rather than molars. The third molars erupt in the mouth later in the life of a human. As the Life span of human ancestors increased, the need for these third molars decreased. Man was able to live a longer life without the molars. D)

56) 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? The size of man's cranial cavity evolved. With increased cranial cavity size, the size of man's brain also grew. This resulted in a smaller jaw and no room for the third molars. A) Agriculture and the use of fire changed what and how man ate and the need for these teeth diminished over time. Jaw size and shaped evolved B) and there was insufficient room for the third molars. The climate on Earth changed from very cold to tropical The tropical climate on Earth lead to a change in the diet of humans and that lead to the need for sharp, pointed teeth rather than molars. The third molars erupt in the mouth later in the life of a human. As the Life span of human ancestors increased, the need for these third molars decreased. Man was able to live a longer life without the molars. D)

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter12: Processes Of Evolution

Section: Chapter Questions

Problem 4CT

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