_____________ is the number of deaths in the population during a given period.

The property of metal by which it can be drawn into wires is called _____________.

A change in which no new substances are formed is called _____________.

An absolute ________ contains the complete address of a file on the Internet.

The force of friction between two surfaces will increase if:

Contact force is another name for _________.

In animals like Annelids, Molluscs, organs have associated to form functional systems, each system concerned with a specific physiological function. This pattern is called ________ system level of organization.

The male sex organs in a flower is the __________.