Chapter 3: The Biosphere - Planet earth

Chapter 3: The Biosphere Section 3-3: Cycles of Matter Chapter 3: The Biosphere Section 3-3: Cycles of Matter A. Recycling in the Biosphere Energy moves 1-way but.. Matter is recycled in an

ecosystem Section Outline Section 3-3 33 Cycles Cycles of of Matter Matter 33 A.Recycling in in the

the Biosphere Biosphere A.Recycling B.The Water Water Cycle Cycle B.The C.Nutrient Cycles Cycles C.Nutrient 1-2.The

TheCarbon CarbonCycle Cycle(Oxygen) (Oxygen) 1-2. 3.The TheNitrogen NitrogenCycle Cycle 3. 4.The ThePhosphorus

PhosphorusCycle Cycle 4. D. D. Nutrient Limitation Limitation Nutrient Interest Grabber

Section 3-3 Its Raining, Its Pouring How many times have you had to change your plans because of rain? It probably didnt help if someone tried to cheer you up by saying, But we really need the rain. However, rain is important. If it didnt rain, how would living things on land get water?

1. When rain falls on the ground, it either soaks into the soil or runs across the surface of the soil. When rainwater runs across the land, what body of water might collect the rain? 2. From here, where might the water flow? 3. After the rain, the sun comes out and the land dries. Where does the water that had been on the land go? 4. Construct a diagram that would illustrate all the places a molecule of water might go. Begin with a raindrop and end with a cloud.

Section 3-3 Interest Grabber continued Energy & other needs As we have seen, energy is crucial to an ecosystem Organisms in an ecosystem need the following to survive

Water Minerals Oxygen Carbon Hydrogen Nitrogen

Elements common on earth; must be in usable form Bio Geo Chemical Cycles Matter is recycled within and between ecosystems Elements & compounds move from one another & the biosphere through BIO-GEO-CHEMICAL cycles

The passing around of molecules! Living Things & Cycles Organisms do not use up matter, they transform matter For example: Carbon passes

through photosynthetic organisms and then heterotrophs, then is released as CO2 - for millions of years! Matter Cycles Water Cycle (#1 page 75) Nutrient Cycles

Carbon Cycle (#2 page 76-77) Nitrogen Cycle (#3 page 78) Phosphorus Cycle (#4 page 79) Read your assigned pages and fill out the notes section that relates to your cycle Be ready to share your new-found knowledge with others! Water cycle Carbon cycle

QuickTime and a decompressor are needed to see this picture. Nitrogen cycle QuickTime and a decompressor are needed to see this picture. Phosphorus cycle

QuickTime and a decompressor are needed to see this picture. QuickTime and a Sorenson Video 3 decompressor are needed to see this picture. LIMITING NUTRIENTS A limiting nutrient is one that is essential for the producers of an ecosystem - but is often in short

supply In the saltwater environments, nitrogen is the limiting nutrient In freshwater environments, phosphorus is usually the limiting nutrient Limiting Nutrients What did we observe in the lab? Did one culture grow faster than another? Why - what was happening? What is an algal bloom? When an aquatic system receives a large

input of nutrients (I.e. runoff from fertilized lawns), algae grows like crazy - can be harmful to the environment Can lead to EUTROPHICATION! The Huron / Portage Lake are influenced by these cycles!

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