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Military dependents are the spouse (s), children, and possibly other familial relationship categories of a sponsoring military member for purposes of pay as well as special benefits, privileges and rights. [ 1] This generic category is enumerated in great detail for U.S. military members.
A control variable (or scientific constant) in scientific experimentation is an experimental element which is constant (controlled) and unchanged throughout the course of the investigation. Control variables could strongly influence experimental results were they not held constant during the experiment in order to test the relative relationship ...
The United States Biological Defense Program —in recent years also called the National Biodefense Strategy —refers to the collective effort by all levels of government, along with private enterprise and other stakeholders, in the United States to carry out biodefense activities. Biodefense is a system of planned actions to counter and ...
Organism. An organism is defined in a medical dictionary as any living thing that functions as an individual. [ 1] Such a definition raises more problems than it solves, not least because the concept of an individual is also difficult. Many criteria, few of them widely accepted, have been proposed to define what is an organism.
Frequency-dependent selection is an evolutionary process by which the fitness of a phenotype or genotype depends on the phenotype or genotype composition of a given population . In positive frequency-dependent selection, the fitness of a phenotype or genotype increases as it becomes more common. In negative frequency-dependent selection, the ...
Sociology. In psychology, codependency is a theory that attempts to explain imbalanced relationships where one person enables another person's self-destructive behavior [ 1] such as addiction, poor mental health, immaturity, irresponsibility, or under-achievement. [ 2]
Biological warfare, also known as germ warfare, is the use of biological toxins or infectious agents such as bacteria, viruses, insects, and fungi with the intent to kill, harm or incapacitate humans, animals or plants as an act of war. [ 1] Biological weapons (often termed "bio-weapons", "biological threat agents", or "bio-agents") are living ...
In biology, a tropism is a phenomenon indicating the growth or turning movement of an organism, usually a plant, in response to an environmental stimulus. [ 1] In tropisms, this response is dependent on the direction of the stimulus (as opposed to nastic movements, which are non-directional responses). Tropisms are usually named for the ...