Class 9/15
We only did a couple of things today in Biology. First, we took our Chapter 3 and 4 Quiz, which you can find the objectives sheet on the first page of your Ecology packet. When we finished the quiz we had to take out our stamp sheet and our homework. The homework was to read lesson 5.1 and 5.2 in our Biology books and write 6 questions and answers according to the reading. Ms. Stein gave us sheets to help us write the 6 questions. The sheet told you how and what to write and some examples to help you. That is what we had to show after the quiz. Once we did that, we went to the back of the room in groups of 4 people and we asked each other the questions. Then, we came back to our seats and took out our Community Interaction notes that we started on 9/14. On 9/14 we talked about predation, (an organism kills and feeds on another) symbiosis (living together) and the 3 classes of symbiotic relationships in nature, (mutualism, parasitism, and commensalism) and niches (physical and biological conditions of an organism) Today, we talked about exponential growth. (J-Shaped on a graph) Exponential growth is growth under ideal conditions and there is a rapid increase in population. We also talked about logistic growth. (S-Shaped on a graph) Logistic growth slows or stops following rapid growth and the carrying capacity is the number of individuals and environment can support and the population levels off. Next, we took notes on the Limits to Growth. The first limit is Limiting Factor. A limiting factor is anything that causes a population to decrease. The second limit is Density Dependent Limiting Factor. The DDLF is a factor that affects larger/ denser populations. MORE: food availability, disease, competition (space, food, mates,), predation, and parasitism. The last thing we took notes on was Density- Independent Factors. It affects populations regardless of its size density. Such as hurricanes, fire, or extreme temperature.

The next scribe will be Breck M.