Exercise 2 solution

Example answer:
Likely causes: too many greens (kitchen waste, grass clippings), too little air, possibly food waste that should not be there, which is attracting the flies.
Rescue steps:
1. Remove any cooked food, meat or dairy.
2. Fork the heap out and mix in plenty of browns: shredded cardboard, straw, dry leaves.
3. Re-pile it loosely, adding coarse woody material for air gaps.
4. Cover it with a lid or old carpet to keep out rain.
5. Going forward, add greens in thin layers, always with a similar amount of brown, and turn it every few weeks if you can.
The smell should fade in a week or two once air gets in.