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.
There are large differences in the water footprint of consumption of nations. In the USA, the average water footprint per year per capita is as much as the water needed to fill an Olympic swimming pool (2 842 cubic metres), that is an average of 7 786 litres of water per person per day.n the Netherlands, 95% of the water footprint of consumption lies somewhere else in the world through imported goods, whereas in India and Paraguay only 3% of the national water footprint of consumption is external.