Question

in what way the movement of the nomad community environment friendly

Answer 1

as these people move from one place to another
the cattle's which they carry help in providing manure for the field's that's is in the form of dung
the next is that they helps in stopping over usage of pasture

Answer 2

There are many uses:- the nomads who kept moving earned money.

Cattle gave dung which they sold.

Cattyle was bought by people who saw these nomads.