Sunday, September 11, 2011

Reflection on Friday 9/9/11





Hey its Jessie. In class on Friday we took notes on energy pyramids. Energy pyramids show how energy is lost from producers to tertiary consumers, or third-level consumers. as you move from up from each level, the food looses 10% of the energy it had in the previous stage. for example, when grass absorbs sunlight, it gets all the energy(100% of energy is gained). When a rabbit eats the grass, it gets 10% of the energy the grass made. When a snake eats the rabbit, the snake gets 1% of the energy the rabbit ate. when a hawk eats the snake, it gets 0.1% of the energy the snake ate.


Also in class we checked on the growth of our duckweed. Before we looked at our duckweed, our teacher inferred that the growth light above our duckweed was too hot and frying our duckweed. My group checked our Duckweed sample and saw that it was dry and the other organism in with our sample, Hornweed, appeared to be dead. My group decided to leave a sample of hornweed and Duckweed by the window over the weekend to see how the new amount of light affected the growth. we counted that there were 45 fronds of duckweed in our bowl which means there are 8 more fronds then two days ago.


the next scribe is: Rachie

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