The correct options are
A The forest cover on the hills for podu has decreased to almost half of the land earlier.
C There is now a lack of space for farmers to use during their land rotation cycle.
The forest cover on the hills for podu has decreased to almost half of the land earlier. This has led to a decrease in the number of food grains for each family. With decreasing forest cover and no place to go, people are compelled to return to the same plot earlier than before. Because of this, the land rotation cycle has gotten shorter, and thus, the soil is unable to recover its fertility like it once did. This results in lesser crop output, which in turn causes food shortages for the people.