An earth embankment built on one or both sides of a river, some distance away from its banks to control flood is called ________?

Presently percentage of area irrigation to that of total cultivated area in our country is ________?

The part of economy which contains all govt. entities is called________?

Butterflies having wing coupling apparatus is________?

Loans not passed through formal banking system e.g. family loans?

The term cell was introduced in 1665 by________?