1-. MOLECULE
The molecule is the smallest particle that has all the physical and chemical properties of a substance.
Is formed by two or more atoms.

3-. CELL
The cell is the anatomical, functional and genetic unit of living things.
The cell is a structure consisting of three basic elements:
1.- plasma membrane,
2. cytoplasm and
3.- genetic material (DNA).

5-.ORGAN
Grouping of various tissues that form a structural unit which was responsible for the enforcement of a particular function within an organism shape.

7-.DEVICE
Set of coordinated systems to fulfill a function.

9-. POPULATION
Individos in one place.

10-.COMMUNITY
The living beings lived in a particular ecosystem form the community

11-. ECOSYSTEM
Biological system consisting of a community of living beings and the natural environment in which they live.