Deep temperate lakes undergo circulation

Define temperate phage?

What is Double Circulation? Mention the stages in double circulation.

Differentiate pulmonary circulation and systemic circulation.

Why is the circulation in man referred to as double circulation ?

Man has double circulation. Name the two circulations.

Mention the animals with single circulation, incomplete double circulation and complete double circulation.

Who discovered circulation of blood? Briefly give an account of circulation of blood with reference to single circulation and double circulation.