Continuous variation are attrions are attributed to________?

International resources shared by all countries e.g ocean, air etc?

A fixed reference point from which the discharge of flowing water is measured is________?

Major financial institution responsible for issuing currency, managing foreign reserves implementing monetary policy and providing banking service to the govt. and commercial banks?

Self incompatibility which is controlled by single gene found in some species of________?

When crop plants adopt to a new environment are called________?