1. 11/9 Check your bottles… You have a couple minutes. Lots happened over the weekend to most of your bottles.

2. Unit Exam Preparation Vocabulary: Nichefood chain Food webpopulation Communitytrophic level (biomass) HerbivoreCarnivore ProducerConsumer CalorieCarbon cycle Nitrogen cyclenitrogen fixing bacteria Nitrificationbiotic potential Preypredator Exponential growthcarrying capacity Limiting factors

3. Concepts Interdependence in ecosystems – food chains and food webs. Energy flows through food webs and is lost to heat and metabolism as it passes through each trophic level. (10% rule) Matter is recycled in ecosystems. Carbon, Nitrogen, Phosphorus. Populations of organisms grow exponentially if there are no factors limiting their growth. Limiting factors such as PREDATION, FOOD AVAILABILITY, COMPETITION AND DISEASE limit the size of a population. (constraint)

4. Resources Book: 506-511, 514-515, 518-519, 525-532, 535-536 Videos: Crash course Carbon cycle Nitrogen cycle Ecosystem ecology Population ecology Community ecology (a little bit) Human population growth

5. Actions REPETITION! – watch small, important, segments of the videos over and over and over and over and over and over and over and over and over………………….. EXPLAIN OUT LOUD – explain a concept out loud to someone. DESCRIBE and EXPLAIN important graphs and diagrams to someone. VIDEO RECORD YOURSELF – Explain concepts on video and then WATCH IT! Only YOU can make yourself adopt these habits. Will you do it?