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.
It represents the amount of productive land area needed to produce the resources (food, energy and materials) and to absorb the wastes produced by an individual. Since 1980, the. average per capita ecological footprint has decreased as many processes (especially crop. production) have become more efficient.