Looking west across the chaparral and Rancho Bernardo at Black Mountain, an ancient andesite volcano that was formed five miles off shore with the Juan de Fuca plate was diving under the North American plate 25 million years ago.
Welcome to Mr. Halsey's High School Biology Page!
All your assignments and supplemental materials will be available here. If you have any questions, please feel free to contact me at this email.
BIOPHILIA OBJECTIVE sheet (everything you need to know for our test)
The first thing to do is to read the materials available on the Threats to Chaparral page. This will provide you with information regarding the impace to invasive, non-native weeds and fire to our native shrubland habitats. Here is a good summary of some of issues related the threat of too many fires.
Does your site have a lot of weeds? Is it near a development? Are there invasive Argentine ants at your site? Has the contour of the landscape been modified?
You can make a difference in the world if you decide it is important enough. Xiuhtezcatl Martinez, a 16-year-old climate activist, has decided that he can make a difference by informing the world about the threat of climate change - a threat to the younger generation, created by the older generation. Listen to Xiuhtezcatl in the video below.
ECOLOGY EXAM RUBRIC
1. Main essay: points, which were underlined, were given in three main areas. a. Describe the two types of fire (crown/surface) and what type of fire pattern chaparral has. b. Plant response (obligate seeders, etc.), explanation of each. c. Describe the chaparral's natural fire frequency, the impact of too many fires, and what happens when non-native, invasive weeds and grasses spread.
Extra points for defining chaparral, giving species examples for obligate seeders, etc., role of heat/chemicals in the germination of chaparral plant seeds, and +1 point for especially well written thoughts/new ideas. High score: 18 points.
2. Watershed Question – a geographic area surrounded by higher elevation areas in which all the water that falls within it all ends up in the same river/creek, then out to the ocean unless there is a landlocked lake. 3 points.
3. Balance of Nature Question. Chart 3 points with time, number, and carrying capacity labeled. Explanation 3 points.
4. Niche. 3 points with drawing assisting explanation, name of species, explanation about collecting food (type and how).
5. What you learned. 3 points. Here is one of my favorites:
"... I have learned a lot. However, what stood out to me the most was my appreciation for nature. Before, I would drive by nature, and think of it as nothing. After the first 'nature walk,' I discovered that taking the time to actually understand what you're seeing, and learning its purpose, can be quite interesting. After a couple more nature walks, I started to understand and relate things from past experiences to what I was learning and seeing then.
When the watershed project was assigned, I was very excited. My original plan of studying a nearby lake was approved. I was excited because it allowed me to combine school with something I enjoyed doing, creating videos. Though parts of the project were hard, my final outcome was learning much more than I thought I would. I also got to apply my experiences of studying nature on nature walks, to a place I previously knew of as only a place with water and mountains, and now as a riparian environment with many native/non-native plants with their own adaptations for survival. Thank you for helping me learn about our world, and see things in it like never before."
*Extra Credit (If finished early - how does the lab compare with the Grant's paper?).
3. Lecture. Artificial selection with Dr. Keeley (or Mr. Halsey for per 4).
4. Group Presentation - Halsey Hints #1: The Evolutionary Journey. Make sure you make the correction to the fourth variable (S) to "Struggle for limited resources" with the following definition: Most populations reproduce more offspring than there are resources to support.
EXAM Essay Corrections! Here is the list of points I was looking for in grading your essay. If you would like to improve your score, rewrite your essay and explain the points you missed. Due 9/26/17.
Evolution Equation = 1pt Define the meaning of each variable = 1pt each (total 6pts) Explain the importance of each variable in the equation in the process of evolution = 1 point each (total 6pts) Define evolution = 1 pt State that natural section is the mechanism for evolution = 1pt Explain the process of natural selection = 2pts Explain that adaptations just appear, often before we need them, NOT because we need them = 1pt Extra examples or especially well done explanations = 2pts
The way I work with the online grading program is to find the total average for all the homework grades for each unit and place that average in one column marked HOMEWORK TOTAL. For our last Evolution Unit I also figured in the previous teacher's homework grade which counted for 50% of the HOMEWORK TOTAL (the portion done in our class represents the other 50%).
To prevent the individual grades from being counted again, they are marked "Not for Grading." The same works with the exam. Both the multiple choice portion and the essay are added together to come up with the total.
The exam is 50% of the total grade, the homework is the other 50%. The total grade can be found in the EVOLUTION UNIT GRADE column.
The total grade currently being shown for the class is for the Evolution Unit. All the homework grades for the Unit we are studying now, Ecology, will be shown as "Not for Grading" until the unit is complete. Once the unit is complete, all the assignments will be averaged, with the grade shown in the HOMEWORK TOTAL as with the Evolution Unit.
You can determine the student's current homework grade by averaging the new posted assignments. I generally use a 5 point scale: 5 = A+ 4 = A 3 = B 2 = C 1 = D