1. Choose three terms from the box to fill the gaps in the extract below. humus
leaching micro-organisms
mineral particles
podzols hardpans
The breakdown of plant litter into ___________________ helps to fertilise soil. Processes such as __________________ may damage soil fertility by causing nutrients to seep below the reach of plant roots. ___________________ are a type of soil commonly found in damp highland areas in Ireland.
Soil composition
2. The divided bar chart shows the composition of soil. Label the pie chart, using the information on the divided bar.