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.
The Footprints of individual nations vary considerably, from highs of near 10 hectares per capita for such countries as the United Arab Emirates, the United States and Kuwait, to lows less than 1 hectare per capita for such countries as Haiti, Somalia and Afghanistan.