A graded assignment on the connection between fossils and evolution.
[98]_family_histories.pdf |
fossil.families.graph.pdf |
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A graded assignment on the connection between fossils and evolution.
Some evolutionary milestones we discussed in class
Cyanobacteria - bacteria began to use photosynthesis and release oxygen (well-established by 3.0 bya) Eukaryotes evolve (2.0 bya) - more complex cells begin to develop Movement - (late-precambrian) search and find food Body structure - (late pre-cambrian) bi-lateral symmetry, appendages and sensory organs in front Sexual reproduction - (by 1.2 bya) combination of 2 sets of DNA leads to an explosion of life forms Now we put it all together. For your analysis, consider the events that happened throughout the whole 4.6 billion years of Earth's history. DUE 3/8
The leading theory on how simple bacteria cells became more complex.
Watch the video and take notes on how early life developed on Earth. Pay particular attention to how life began to diversify during this time.
How can something be so interesting and depressing at the same time...mass extinctions. This information gets added to your timeline.
Add the information from the precambrian reading and the timeline events page to your individual timeline. Watch the video to get background on early life.
We are using a register tape timeline to explore the development of life on Earth.
This is our final assessment for our Earth in space unit. We have had 3-4 days to work on it in class. Due Monday 2/26
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8th grade Integrated SciencePresent Unit: genetics |