Decay
Biology: AQA GCSE Higher, topic 7.2.12
The Rate of Decay of Biological Material
Biological material in the form of waste products or dead organisms decays as a result of the activity of decomposers. The rate of the decay process is dependent on:
Temperature
- High temperature is usually best.
Moisture availability
- High moisture availability is usually best.
Oxygen availability
- High oxygen availability is usually best.
Test yourself on Decay
What are the ideal conditions for decay?
Which storage conditions would cause food to decay the slowest?
What effect does removing oxygen have on the rate of decay of grass cuttings?
Why does food stored in a warm, moist place decay faster than food stored in a cool, dry place?
What effect does drying out a piece of fruit have on its rate of decay?