Cycles The cycles – Nitrogen and Carbon.

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Presentation transcript:

Cycles The cycles – Nitrogen and Carbon

Remember energy flow and the law of conservation

The Nitrogen Cycle

Nitrogen Cycle The nitrogen cycle is a complex biogeochemical cycle in which nitrogen is converted from its inert atmospheric molecular form (N2) into a form that is useful in biological processes.

Root Nodules Legumes (beans and peanuts) have bacteria that live in the roots and “fix” the nitrogen (N2) into a form of nitrogen (NH3)that plants can use What type of symbiotic relationship is this? Explain. Mutualism. The bacteria transforms the nitrogen into a form the plant can use and the plant provides the environment for the bacteria to live

Nitrogen Cycle Why do we need nitrogen? -Protein and DNA/RNA 2. What would happen if we removed one part of the Nitrogen cycle? -The cycle would be broken. 3. What happens when we break part of the cycle? -Organisms cannot exist as they did before – they must adapt or die.

Carbon Cycle Photosynthesis Cellular Respiration As you can see carbon and oxygen are cycled back in forth in these two process - photosynthesis in plants and cellular respiration in almost all organisms

Carbon Cycle

Carbon & Oxygen Cycle 1. Look at the cycle-Which part of this cycle has changed drastically over the last 200 years? - Combustion 2. Why has combustion increased? The industrial revolution 3. How has increased combustion affected the Earth? -caused Global Warming 4. What has global warming caused? -polar ice caps melting, flooding, climate change 5. Looking at the cycle how could we counteract the combustion? -Increased photosynthesis

Think, Write, Pair, Share: Why does a change in one area of the cycle affect other areas? (for each cycle)

Today’s activity Use pages 77-78 to make your Cycle Art Make sure you include all labels and arrows Translate the arrows and answer the questions at the bottom. Be prepared to read your answers out loud. What questions do you have?