The extensive evidence in support of both fact and theory of evolution is an interrelated set of now well confirmed hypotheses including descent with modification, natural selection, and genetics as being the mechanisms behind the evolutionary process itself. ... Droughts thus favor birds with strong, wide beaks that can break these tougher seeds, producing populations of birds with these traits. ... Although the genetic variation on which natural selection works is based on random or chance elements, natural selection itself producesadaptive? ... The extensive evidence in support of both fa...

• Word Count: 1289
• Approx Pages: 5
• Grade Level: Undergraduate

Large plants, birds, and mammals make up 1/2 of the world's species. ... - 270,000 Plants - 70,000 Fungi (More related to Animals than plan, share very little similarities with plants when put in the tree of life) - 45,000 vertebrates (Birds are Reptiles) - 40,000 Protists (Algae is a protist, not a plant), (Plasmodium is the protist that causes Malaria) True or False All species on earth have been discovered. ... Sources of Variation Mutation Random changes in the DNA Sequence (changes the gene into something totally new) Mutation Causes Environmental damage (UV, Radiation, Chemical...

• Word Count: 856
• Approx Pages: 3
• Grade Level: High School

These variations are minor and they do not occur so frequently as to threaten the survival of the species as a whole, but these variations are entirely random, and thus they do not always work to the benefit of the organism. ... For example, a hawk exhibits certain behaviors when it sees a flock of birds. The hawk has an instinctual, biological drive that has been triggered to go out and look for food, but it hasn't consciously realized that a flock of birds could denote prey. ...

• Word Count: 2370
• Approx Pages: 9
• Grade Level: Undergraduate