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.
Water Footprint water footprint is quite simply the volume of water used. At the individual level, this is expressed in litres. But at the national level, this becomes complex - The water footprint of a nation is equal to the use of domestic water resources, minus the virtual water export flows, plus the virtual water import flows. The total âwater footprintâ of a nation is a useful indicator of a nationâs call on the global water resources. The water footprint of a nation is related to dietary habits of people. High consumption of meat brings along a large water footprint. Also the more food originates from irrigated land, the larger is the water footprint.