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.
Ecological Footprint. This is a comparison of the actual use of renewable, sustainable resources, including water and land, that a population uses for support relative to what is annually renewed. Non-renewable resources are not considered since they are not considered sustainable. Ecosystem.