A gram stain is a type of microbiology or laboratory test that determines whether bacteria are present. It also determines whether bacteria are gram negative or gram positive. The difference between gram negative and gram positive bacteria can be important when determining appropriate treatment for an infection.
Globally, the available ecologically productive land area included in the Ecological. footprint analysis is 1.89 hectares for each person. The footprint takes into account fossil. fuel use, cropland, forests, nuclear and hydroelectric power, fisheries and buildings.
Every human produces an individual ecological footprint that is determined largely by the wealth and level of development in the country they live inâmore developed countries have a larger footprint on averageâbut the choices we make in our daily lives also contribute.