Cycling Big Ideas.

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Presentation transcript:

Cycling Big Ideas

7.5B Demonstrate and explain the cycling of matter within living systems such as in the decay of biomass in a compost bin I can draw a diagram that shows the flow of matter. I can explain in complete sentences, the flow of matter I can describe what takes place in a compost bin I can interpret/analyze diagrams of cycles

Matter Anything that has mass & volume (takes up space) Examples: Plants & Animals Water Air

Law of Conservation of Matter Matter cannot be created Or destroyed Only can be rearranged Beginning Matter = End Matter How could you have part of a dinosaur inside you?

Dinosaur (Carnivore) Plants Dead dinosaur Or Feces Decomposers

Decomposer Organisms that chemically break down dead organisms & feces, and returns nutrients to the soil Examples: mushrooms, worms, bacteria, microorganisms, dung beetles, mold, insects, maggots

Biomass Dead plants & animals, feces/manure Renewable energy source from biotic factors A tropical rainforest has more biomass than a desert

Compost Bin Container filled with leaves, grass, fruit, etc. Decomposers break it down chemically into humus (natural fertilizer) Needs: moisture, air, rotated, nitrogen, carbon Temperature increases Amount of biomass reduces

Process of Decaying Reduces Biomass Increases temperature Click below for Video Clips Fruit & Vegetables Rabbit

Need to know about DECOMPOSITION Organic matter is broken down chemically by decomposers, returned to the soil Temperature increases because heat energy is released by decomposers. Biomass is reduced during decomposition. New plants use the nutrients from the soil to grow. Animals get nutrients they need from plants and other animals. Nutrients needed: energy, nitrogen, carbon

Carbon Cycle Plants take in more carbon dioxide than they give off! What would happen if deforestation took place? More cars?

Nitrogen Cycle Where do animals get NITROGEN?

Water (Hydrologic) Cycle What would happen to the water cycle without the Sun?

Cycles Reflection Diagram the flow of nutrients/biomass. Explain in complete sentences the cycling of nutrients/biomass. Use vocabulary words such as: decay, biomass, compost bin, decomposer, Law of Conservation.