I'm struggling to find information online for two of the five bullet points I'm told to research. This is for a controlled assessment on drainage.
- What affects the air and soil content of soil
- How to measure porosity and permeability of different soil samples
If anyone could link me to some relevant websites I'd really appreciate it!
Turn on thread page Beta
GCSE Biology Controlled Assessment Research Help watch
- Thread Starter
- 21-01-2017 13:12