Friday, May 16, 2008
Fri-Day 2
Bio- on Blackboard, I posted the first of at least EIGHT Regents that we will take and go over before your 2008 Bio Regents. Don't miss this opportunity to go into the Regents exam PREPARED and CONFIDENT. Complete the Regents so we can go over it at extra help next Tuesday at 8:10AM.
We detailed the differences between primary and secondary succession: primary succession begins on terrain that has no fertile soil, just barren rock; secondary succession begins with the remains of the organisms of the primary succession so that the initial soil is fertile. This leads to the more rapid rate of the secondary succession as compared to that of the primary succession.
We then discussed, from north to south, the world's biomes and the typical, best-adapted species that inhabit each respective biome. We learned that aquatic biomes generally are the most stable due to the limited temperature and pH fluctuations/changes within that biome. Most of the life forms in aquatic biomes (i.e. most of the biodiversity) exists where light can penetrate i.e. the photic zone.
We then saw a few organisms that are adapted to the aphotic zone of the aquatic biomes: bioluminescent organisms. Our luminol demo failed but we will try, try again on Monday.
Chem 7/8- we began our new unit on oxidation-reduction, redox, by defining the processes of oxidation (LOSS of electrons) and reduction (GAIN of electrons) , LEO and GER.
We saw several examples in which we identified the oxidized element and the reduced element.
We also reviewed some of the oxidation number rules.
We then discussed the acid-base titration lab.
Chem 9- we began our new unit on oxidation-reduction, redox, by defining the processes of oxidation (LOSS of electrons) and reduction (GAIN of electrons) , LEO and GER.
We saw several examples in which we identified the oxidized element and the reduced element.
We also reviewed some of the oxidation number rules.
We detailed the differences between primary and secondary succession: primary succession begins on terrain that has no fertile soil, just barren rock; secondary succession begins with the remains of the organisms of the primary succession so that the initial soil is fertile. This leads to the more rapid rate of the secondary succession as compared to that of the primary succession.
We then discussed, from north to south, the world's biomes and the typical, best-adapted species that inhabit each respective biome. We learned that aquatic biomes generally are the most stable due to the limited temperature and pH fluctuations/changes within that biome. Most of the life forms in aquatic biomes (i.e. most of the biodiversity) exists where light can penetrate i.e. the photic zone.
We then saw a few organisms that are adapted to the aphotic zone of the aquatic biomes: bioluminescent organisms. Our luminol demo failed but we will try, try again on Monday.
Chem 7/8- we began our new unit on oxidation-reduction, redox, by defining the processes of oxidation (LOSS of electrons) and reduction (GAIN of electrons) , LEO and GER.
We saw several examples in which we identified the oxidized element and the reduced element.
We also reviewed some of the oxidation number rules.
We then discussed the acid-base titration lab.
Chem 9- we began our new unit on oxidation-reduction, redox, by defining the processes of oxidation (LOSS of electrons) and reduction (GAIN of electrons) , LEO and GER.
We saw several examples in which we identified the oxidized element and the reduced element.
We also reviewed some of the oxidation number rules.
# posted by C @ 12:52 PM 
