of annual weeds that form a zone around carpenter-ant 

 mounds in a shortgrass association or community-type. 



Microbe 



A Microorganism (q. v.). 



Microclimate 



The climatic conditions within a Microhabitat (q. v.). 

 cf. Local. 



Microcommunity 



A small Community (q. v.) such as the plants and animals 

 living in and on a decaying stump in a forest. 



Microcosm 



A miniature world, organisms plus the environmental 

 conditions, cf. Ecosystem. 



Microdissection 



The procedure in which organisms or cells are studied 

 through a microscope by means of a mechanically operated 

 apparatus. 



Microhabitat 



A small Habitat (q. v.), e. g., a tree stump or a space 

 between clumps of grass. 



Micro-micron 



A metric measure, one-millionth part of a Micron (q. v.). 



Micro-millimeter 



A metric measure, one-millionth part of a millimeter. 



Micron 



A metric measure, one thousandth part of a millimeter. 



Micronutrient 



A chemical substance required by an organism in very 

 small quantity, e.g., boron by many plants, cf. Essential ele- 

 ment, Macronutrient, Vitamin, Deficiency disease. 



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