H 



Habit 



The general appearance of a plant such as tall and erect 

 or decumbent and trailing, cf. Life-form. 



Habitat 



The sum total of environmental conditions of a specific 

 place that is occupied by an organism, by a population, or a 

 community, cf. Environment, Niche, Site, Microhabitat, 

 Standort, Station. 



Habitat Form 



The Growth form or appearance of an organism which 

 is characteristic of a certain Habitat, cf. Epharmony, Life- 

 form, Eco type. 



Habituation 



The relatively waning response of an organism resulting 

 from repeated stimulation which is not followed by any 

 reinforcement. 



Hadal Zone 



The very deep part of the ocean, below 6000 meters, 

 cf. Abyssal. 



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