Raising livestock in the sertão is difficult because

Raising livestock in sertão is difficult because there is little land for grazing.

Located in the northeast of Brazil, Sertão is a semiarid region facing extreme droughts due to prolonged summer seasons and lack of rainfall. The animals in the region suffer due absence grazing areas.

Unfavorable weather conditions increases the decline of farming some domestic animals such a sheep and cows while goats seem to survive in the unlikely weather conditions. The summer is normally 9 months long in Sertão and the high temperatures lead dry rivers, no grass and no tree leaves for shades.

the answers for the whole quick check is

1. b

2. b

3. a

4. c

5. b

6. a

7. d

river is shown in this type of map