Environmentally Friendly?!...

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Presentation transcript:

Environmentally Friendly?!... Think about the life cycles of these two products

Closed-Loop or Open Loop? Crude oil Plastic Pen Bin Landfill / Incinerate Wood Paper Recycle More paper / compost to make soil

Nature works in Closed Loop Systems Think – what are the inputs and outputs for a wild rabbit? (No waste!... Outputs from one process become inputs for another process)

D.O.M. What can it be???..

Dead Organic Matter Where does it go?

Dead Organic Matter Worms bacteria fungi - enzymes

Ecosystem Balance Waste? Not all perfect closed loop - rivers carry away leaves, nutrients etc. Animals may migrate and not return. Waste?

Ecosystem Stability Relies on soil stability (or get desertification)

Complete ecosystem services worksheet – First side only! Humans rely upon them… What do you think they are??!!! Read p.58 Separate Sciences Book Complete ecosystem services worksheet – First side only!

Bioaccumulation Due to rubbish produced by humans that cannot be broken down. Mercury is a particular problem in marine ecosystems – do rest of sheet! http://vimeo.com/45969895

Human activity can unbalance ecosystems How does harvesting crops affect the environment? What needs to be replaced?

Eutrophication What could make the algae grow so quickly? What happens when it dies?....Summary P.63 http://www.youtube.com/watch?v=UGqZsSuG7ao http://www.youtube.com/watch?v=h-zncNp-X-E

Lets read the rest and do mind maps!(p.64) or qu! …The next bits as quick as possible!.... Intensive agriculture – read p.64 & 65 together Unsustainable fishing – – bullet points Desertification Maintaining biodiversity Sustainable forests Oil and the future