Kiosk 8th Period Notes Due Friday Darwin’s expedition By: Diamond Brown Darwin’s observations • Darwin observed the diversity of living things. • the remains of ancient organisms. • And the characteristics of organism’s living on the Galapagos islands. Diversity • He was amazed by the diversity of all the different animals • There were many of the same species of animals with diff. characteristics than the other organism that are the same species but have diff. characteristics. • Species- a group of similar organisms that can mate with each other & produce offspring • He found many diff. species of animals in the Galapagos islands Fossils • Fossils- the preserved remains or traces of an organism that lived in the past Evolution By: Gabby Lucarelli & Raelyn Dawson Evolution The gradual change in species overtime is called evolution. Darwin's reasoning • Darwin really wanted to understand the different variation and life styles of organisms on the Galapagos islands. • Darwin's reasoned that plants or animals that arrived on the Galapagos islands faced conditions that were different from the conditions faced on the main lands. Darwin’s Theory • Darwin’s ideas are often referred to as the theory of evolution. • A scientific theory is a well-tested concept that explains a wide range of observatons. Galapagos Organisms By: Eric Rudary, Tyler Castro, Leny Bykov, Leo Held, Alexis Bearss • Darwin found that many of the birds on the Galapagos Islands resembled those on the mainland. • Darwin hypothesized that a small number of different plant and animal species had come to the Galapagos Islands from the mainland. • Darwin noticed many differences among organisms as he traveled from one Galapagos Island to the next. • The beak shapes of the different finches on the Galapagos Islands are an example of an adaptation (a trait that helps an organism survive and reproduce). Natural Selection By: Angela Faranda && Ariana Ehasz Natural selection is the process by which individuals that are better adapted to their environment are more likely to survive Overproduction When too much offspring are produced there is not enough resources – food, water, and living space- for them all. If newly hatched insects survived, they would soon crowd out all the other plants and animals. Variations A difference between two individuals of the same spices. Competition Where animals compete for food, space, or water to survive. Its mostly indirect than violent. Selection Selection is the process were animals with an adaptation reproduce a lot more and over the time of many different generations. Environmental Change Environment Change is when the environment changes and can kill off many members of a species. Then only the animals with a special adaptation survive and live on to reproduce more of the animal. The offspring then gets the adaptation. Genes And Natural Selection Variation in the genes is what causes natural selection. The animal with the gene is more likely to have offspring which will in turn get the special gene.