Organization of Cells
Biological organization exists at all levels in organisms. It can be seen at the smallest level, in the molecules that made up such things as DNA and proteins, to the largest level, in an organism such as a blue whale, the largest mammal on Earth. Similarly, single celled prokaryotes and eukaryotes show order in the way their cells are arranged. Single-celled organisms such as an amoeba are free-floating and independent-living. Their single-celled "bodies" are able to carry out all the processes of life, such as metabolism and respiration, without help from other cells. Some single-celled organisms, such as bacteria, can group together and form a biofilm. A biofilm is a large grouping of many bacteria that sticks to a surface and makes a protective coating over itself. Biofilms can show similarities to multicellular organisms. Division of labor is the process in which one group of cells does one job (such as making the "glue" that sticks the biofilm to the surface), while another group of cells does another job (such as taking in nutrients). Multicellular organisms carry out their life processes through division of labor. They have specialized cells that do specific jobs. However, biofilms are not considered multicellular organisms and are instead called colonial organisms. The difference between a multicellular organism and a colonial organism is that individual organisms from a colony or biofilm can, if separated, survive on their own, while cells from a multicellular organism (e.g., liver cells) cannot. Next time fraze your question better. It took me a secound to understand what you were trying to ask
The appropriate response is tundra, taiga, steppes. Tundra is a sort of biome where the tree development is obstructed by low temperatures and short developing seasons. The term tundra comes through Russian тундра from the Kildin Sami word tūndâr "uplands", "treeless mountain tract"
The pathogen is defined as a biological agent that causes disease. The number and types of pathogens that affect garden plants, can instill a constant fear. They include almost all of the biological spectrum. Their action may be temporary as in the case of biting insects, or permanent, as in viral infection. The human body is a favorable environment for the functioning and reproduction of pathogenic organisms, which include viruses, bacteria, protozoa pathogens, and others. Most of them can not survive for long outside the human body, but it is a short period of time is sufficient for entering them into the body of a new host .
