Answer;
- A batch culture
A closed system, used for bacterial growth, where nothing is added and nothing is removed is called a batch culture.
Explanation;
-Batch culture is a technique used to grow microorganisms or cells. A limited supply of nutrients for growth is provided; when these are used up, or some other factor becomes limiting, the culture declines. Cells, or products that the organisms have made, can then be harvested from the culture.
-In this culture, certain volume of medium is inoculated with cells. The cells grow in the medium and are exposed to changing conditions, as nutrients are depleted and waste products accumulate.
On the other hand, the modern system of classification does not only study the observable features but it also traces the evolutionary line and relationships between organisms to classify them into larger categories or clades.
Mimicry is a structural adaptation that enables 1 species to look like another
Oxygen is a compound , phosphorus and nitrogen , and reservoirs