Question 2
Biogas (Figure 7.3) can be burnt for cooking, heating and lighting. It can also be used as fuel for vehicles or to generate electricity. The remaining solids from making biogas can be used as fertilisers to make crops grow better.
Look back at the question on the chapter opener. How can the use of biogas digesters help reduce poverty and global warming?
Look back at the question on the chapter opener. How can the use of biogas digesters help reduce poverty and global warming?
