Energy flows

Today we're going to look at the other Biology material we need to cover for this half term. Answer the following in your books:

1. What is biomass?
2. Explain where the energy in most foodchains originally comes from:
3. What reaction produces energy in living cells? Where does this reaction occur?
4. Name four ways in which an organism can lose energy so that it isn't available higher up the food chain:
5. What organisms carry out decay?
6. What conditions are needed for decay to occur?
7. Briefly explain how carbon can travel from the atmosphere into the bird, through the soil and back to the atmosphere again.
8. How much energy is needed to produce a steak?
9. How would this change if the animal was intensively farmed?
10. Watch this video, and explain why this body DIDN'T decay:
11. Try this activity. Is there one way or more than one way for carbon to cycle?