What Darwin Observed Darwin sent specimens collected on his voyage back to England to be examined by experts Fossils collected were confirmed to be large versions of the present-day sloth and armadillo The Galapagos Island’s bird specimens were in fact many different species of birds Darwin originally thought they were just variations of the same…
Darwin’s Five Observations More young are produced than survive Individuals vary in their characteristics Some characteristics are better than others These characteristics are inheritable Long periods of time are available Darwin’s Two Major Points Many species of organisms presently inhabiting the earth are descendants of ancestral species that were different from modern species The mechanism…
The Gaia hypothesis formulated by James Lovelock in the late 1960s presents the notion that our planet is a single self-managing organism which regulates the conditions necessary for life. After its publication in James Lovelock’s book “Gaia: A new look at life on Earth” it revolutionized the perspective of Earth as a “living being” and…