Friday, May 16, 2008
Thurs-Day 1
Bio- we discussed primary and secondary ecological succession and showed that as communities develop in a particular environment, the soil becomes more and more fertile; the soil can then support more and larger types of plants/trees so a progression is seen over time as communities that are initially dominated by grasses then become dominated by shrubs, then smaller trees, and finally larger trees in the climax community. If a climax community is wiped out by fire or volcano, the resulting land will still contain relatively fertile soil from the debris/aftermath of the fire. Thus, a secondary succession can develop and will develop faster than did the primary succession.
We also saw the effects of exponential human population growth: its depletion of limited resources, an increase and then a decrease in the world food supply, and an increase in overall pollution levels. This necessarily leads to more competition (sometimes WAR) within the species for habitable land and available resources.
Chem 7- we took the acid/base/salt unit exam
Chem 8/9- we took the acid/base/salt unit exam and then we discussed the salt hydrolysis lab.
We also saw the effects of exponential human population growth: its depletion of limited resources, an increase and then a decrease in the world food supply, and an increase in overall pollution levels. This necessarily leads to more competition (sometimes WAR) within the species for habitable land and available resources.
Chem 7- we took the acid/base/salt unit exam
Chem 8/9- we took the acid/base/salt unit exam and then we discussed the salt hydrolysis lab.
# posted by C @ 7:11 AM 
