Rearrange the following jumbled up sentences into meaningful ones
Example- nectar/bees/miles/ many/in search of/fly
Bees fly many miles in search of nectar.
(a) Human travellers/ animals /unlike /maps/have /do not
(b) Navigate/different clues/they/instead/many/by using
(c) Use /mountains/ birds /rivers / and
(d) The sun/also use/they/as /and stars/ a compass