Fossils-Clues to the Past
- Fossils are the remains of organisms that once lived. They provide a record of the past life on earth.
- Fossils can be the preserved remains or an imprint of a once-living organism.
- Scientists use the fossil record together with what they know about present-day life on earth to draw conclusions, or "fill in the gaps"
- Scientists usually find only fossilized parts of an organism because the soft parts usually decay before the organism becomes fossilized .
- Mutations,which are changes in an organisms DNA, may pass on helpful traits or some other adaptive advantage to an organism, which can be passed on to future generations.
- Over a long period of time, mutations can lead to a genetic change within a species.
- Evolution is a process that results in changes in the genetic makeup of a species over very long periods.
Hi Mr Taylor When are we working on science fair?
ReplyDeleteWith the Darwin theory did he think that we evoluted or did we and other animals go through evolution?
ReplyDeleteStephanie,
ReplyDeleteFirst question: We will be working on Science fair projects sometime next week.
Second question: Darwin believed that humans evolved from an animal ancestor. He has collected data to support his theory, but it is still just a theory.
When do you think we will have the next chapter test?
ReplyDelete