Happy Monday! (;

Today In Class
- Handed in Flow Maps
- Went over UP pages 33-36
- Watched a little clip of a Billy Nye video.- Discussed Primitive Earth
- M&M Lab!!! (fun and yummy!)
Notes

Ancient Earth

• Earth is about 4.6 billion years old.
• Atmosphere was composed of gases: CO2, N2, water vapor, CH4, H2 S. (There was no O2.)
• Oxygen came from plants.
• Organisms in the past were aerobic. (didn't use/need oxygen to survive)

First Organic Molecules

• 1950's Miller and Urey reproduced conditions of ancient Earth.
• Electric sparks stimulated lightning.
• Amino acids began to form.

Miller and Urey's Experiment



ENODSYMBIOTIC THEORY
Homework

1. Finish M&M Lab UP 31-32. (tomorrow)

2. Read 26.3 w/ check my understanding (WEDNESDAY)
3. TEST FRIDAY! STUDY!!!!

4. Tv Ad dude 2/28

the next scribe is.......... Melissa! (;