| Category | Format | Size |
|---|---|---|
| Zhejiang Education Edition Ninth Grade Science Volume 2 | pptx | 6 MB |
"Evolution of Biology" PPT free courseware
Description
"Evolution of Biology" PPT free courseware
Part One: The Origin of Biology
There are many kinds of creatures in nature, and more than 2 million species have been known to mankind. So where do so many kinds of creatures come from?
1. Creationism
2. Theory of Evolution
Evidence: Fossils and genetic material
What fossils tell us
How are fossils formed? What secrets are hidden?
animal death
Muscles rotted and silt covered corpse bones
Inorganic salts precipitate in bones to form fossils and are preserved in rocks
Changes in the earth's crust, erosion by wind and water (weathering), expose fossils.
Evolution of living things PPT, part 2: fossil types
Remains, Relics and Relics
How do fossils support the idea of biological evolution?
By arranging fossil specimens of the same type in chronological order, you can find some evidence that supports the view of biological evolution.
Past: Inferring the genetic relationship between organisms by observing the morphological and structural characteristics of biological fossils
Now: Compare the DNA and protein differences between paleontological remains and paleontological fossils to infer the genetic relationship.
As new evidence continues to be discovered, various previously accepted hypotheses are constantly being revised and improved.
Evolution of Biology PPT, Part 3: Class Summary
1. Formation and types of fossils
2. Fossils as evidence of biological evolution
3. Modern methods of inferring genetic relationships between organisms
Keywords: Zhejiang Education Edition ninth grade science PPT courseware for the second volume free download, biological evolution PPT download, .PPT format;
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Update Time: 2024-06-27
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