Mrs. Steins's 2nd period STS Biology

heToday science class was definitely out of the ordinary. Class started out with a series of drills, first came the no warning and warning tornado drills, then came the fire and lock down drills. I thought that class was going to be easy, but I didn't think that class was going to be extended! Soon we began our real biology class, we started out discussing last nights homework. We talked about how primary succession takes place when a whole new ecosystem is being created.This can take hundreds of years. On the other hand secondary succession is a much quicker process, this takes about fifty years. secondary succession takes place after a natural disaster hits and repair to the ecosystem is required.

we also discussed the three stages of primary succession. In the primary stage Lichens break down rock into soil, mosses and grasses start to sprout. In addition perennial plants also start to grow. For the intermediate stage shrubs pines and cotton woods start to grow. Lastly in a climax community a dense forest of beach and maple trees develops. Toward the end of class we were given about twenty minutes to work on the biom charts. What was not finished was to be completed for homework.