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Bio Unit 10
| Question | Answer |
|---|---|
| What percent of life is extinct | 99% |
| if something is not extinct, what is it called | extant |
| what rock type do fossils form in | sedimentary |
| what are the two types of dating that scientists use | relative and radioactive |
| relative dating | where you figure out the age of fossil determined by the placement of other fossils |
| carbon dating (also called radioactive dating) | where you figure out the exact date of rocks and fossils by determining the half life of the isotopes |
| trilobite | a common type of index fossil |
| index fossil | a type of fossil that is abundant in a variety of areas and it existed for a short time, very useful for relative dating |
| Precambrian time | 88% of earth's history |
| Paleozoic era | Cambrian explosion (animals evolved) ends with mass extinction |
| Mesozoic era | age of dinosaurs, ends with mass extinction |
| Cenozoic era | age of mammals, we are currently in it, and it will end with mass extinction |
| after liquid water was on earth, what life form was common | bacteria and anaerobic prokaryotes |
| Miller and Urey's expiriment | they thought that by mixing compounds for life that they could make them into simpler compounds that were found on primitive earth, however they only made amino acids |
| take a look at the endosymbiotic theory | DID U LOOK AT IT? |
| fitness/sucess | if you survive long enough to reproduce and your children survive long enough to reproduce |
| anatomical adaptation | a part on or in the body that aids in survival |
| physiological adaptation | an internal reaction (chemicals) to aid in survival (like venom) |
| behavioral adaptation | a behavior or social cue that aids in survival |
| Lyell and Hutton | they found that the earth is millions, not thousands, of years old |
| name the three main points in Darwin's argument | earth changes therefore life changes it takes deep time for life to change earth IS OLD |
| name the three main points in Lamark's argument | life changes over time organisms adapt to environments all species form from other species |
| what is selective use and dissuse | Lamark came up with the idea and said that if an organism has to use something more, it will adapt within it's lifetime and it will pass the new trait onto it's offspring |
| Malthus | said if the population contd' to grow, we would eventually run out of resources |
| who sent an essay to Darwin who had similar findings | Wallace |
| when and what was the book called that Darwin published | 1859, was called "On the Origin of Species" |
| what were the two animals that Darwin focused on, and where | tortises and finches and in the Galápagos islands off the coast of Ecuador |
| scientific theory | an explanation of a natural phenomena backed by evidence |
| what were Darwin's observations when he was on his voyage | he noticed that there were many different variations of the same species on the different islands, and proposed the theory that they had all came from the same origin species |
| when and in what ship did Darwin make his voyage | 1831, H.M.S. Beagle |
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I'mtheAlpha