How do plants, animals and humans survive in extreme temperatures? Journey through some of Africa''s most fascinating deserts to find out. Deserts of Africa is at Oxford Reading Level 10. It is for readers aged 7 to 11 years old who are working below expected standard in their reading. The Readerful Rise series ensures that older struggling readers have books with age-appropriate content and topics, that look like the books their peers are enjoying, but are written at a level they can read successfully.