With different chemical arrangements and formation Of complex molecules, the life emerges on the level of the ?

Organelles are ?

Functional unit of DNA Is ?

A group of similar cells that perform a specific function is:

Two or more populations of different species living and interacting in the same area form

A group of very similar inter breeding organisms constitutes?

Members of one species inhabiting the same are form ?

Various tissue types combine to make up ?

Human blood is an example of?

 .

Which of the following is an example of “molecule”?