Candy Video; Homework Check; Finish Biogeochemical Cycle Notes; Intro Poster Project

Can you die from eating too much candy?

Homework check: 

15. Bozeman Science APES Biogeochemical Cycles (8:30 mins)

Answer the following questions as you watch:
1. What are the three 'abiotic' types of matter? (where nutrients cycle through)
2. Name the 5 biogeochemical cycles discussed in the video.
3. Limiting nutrients lead to _____, or overly enriched water due to runoff. 

Let's clear up some common misunderstandings about ecosystems and add some very important clarifying information...(take notes, add to your guided notes!)

The 10% Rule means that when energy is passed in an ecosystem from one trophic level to the next, only ten percent of the energy will be passed on. A trophic level is the position of an organism in a food chain or energy pyramid

Energy that isn't passed along to the next trophic level is lost as heat

The SUN is the ultimate energy source for all life

Only plants (+ algae and some bacteria) do photosynthesis, and they can only do it during the day when light energy from the sun is available. BUT, at all times plants are capable of doing cellular respiration to get energy needed to grow, repair, etc.

(These 4 Photosynthetic Animals are the exception)

The main goal of cellular respiration is to release energy stored in food

Food webs contain food chains

Continue...
Heading: Biogeochemical Cycles
Learning Objective: I can describe the major biogeochemical cycles and the steps involved in each cycle.

WARM UP: Using what you already know, draw the water cycle. Use arrows to indicate the flow of water through the cycle and label with appropriate terms. Do this on a small white board with your table partners. 
Water Cycle

Matter, in the form of nutrients, cycles within and among ecosystems and the biosphere. 

Biogeochemical Cycles - natural processes that recycle nutrients in various chemical forms from the nonliving (abiotic) to living (biotic) organisms and then back to the abiotic environment

Bio - living
Geo - relating to the earth
Chemical - organic matter returns to chemical matter 

These cycles are driven directly or indirectly by incoming solar energy and the earth's gravity

The 5 Biogeochemical (or Nutrient) Cycles:
Water, Carbon, Nitrogen, Phosphorus, & Sulfur

Nutrient cycles connect past, present, & future forms of life. Some of the carbon atoms in your skin may have once been a part of an oak leaf, a dinosaur's skin, or a layer of limestone rock. A person living 25,000 years ago may have inhaled some of the nitrogen molecules you just inhaled!