Why are cells called the building blocks of an organism?

  A cell is called the building block of an organism because all the organisms are made of cells.

Explanation:    From unicellular to multi-cellular , the basic body structure and plan start with a cell.

the answer is b They are made from nonliving materials.Explanation:

I took the test

answer; when the government fails to protect the fundamental rights of the people;

answer; calendar;