But the continuum of observations and experiments fail to validate its claims to the origin of life. ... or the origin of life or the species; that complex man evolved from simple form. ... Darwin realized when he says:Not one change of species into another is on record?... Charles Darwin, My Life and Letters. ... The Origin of the Species held as an icon in biological science has the chapterDifficulties,? ...

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I)Darwin's Dilemma A)Darwin set sail on December 27, 1831 for a cruise around the world 1)He was well educated and had a strong interest in natural history 2)He also had keen powers of observation and an analytical mind 3)Each place he went he collected animal and plant specimens to his collection (a)He examined his specimens and filled notebooks with his observations B)Throughout the voyage he witnessed countless wonders of nature 1)He demanded explanations for these wonders II)The Diversity of Life A)When Darwin visited tropical South America he saw countless species 1)In one ...

• Word Count: 1698
• Approx Pages: 7
• Grade Level: High School

Similarly, in 1859, Charles Darwin recognized that millions of years were necessary for small evolutionary changes to accumulate and produce the variety of life we see today. ... Precambrian rocks are mostly covered by rock systems of more recent origin. ... At the later end of the Paleozoic, the first and the largest mass extinction in history wiped out approximately 90% of all marine animal species. ...

• Word Count: 1841
• Approx Pages: 7
• Grade Level: Undergraduate