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.
1 Your footprint is 0.00 metric tons per year. 2  The average footprint for people in United States is 20.40 metric tons. 3  The average for the industrial nations is about 11 metric tons.  The average worldwide carbon footprint is about 4 metric tons.