ECOSYSTEM

Ecosystem is a complex two directional relationship between organisms and their surrounding, whether biotic or a-biotic.

The units of organisms based on the hierarchy of organisms from the simplest to the most complex are individual, population, and community.

Individual is an organism or single organism. For example, a cat, a banana, a man, etc. From Latin word "individuum" (cannot be divided).

Population is the group of individuals of the same species that occupy a certain region. For example, a group of bears in the jungle, a group of rice in the land, and so on.

Community is all of populations which occupy the same region. For an example is land community. In the land we can find population of rice, population of grass, population of insect, etc.




(source : N Nurhayati, S.Si)