| Terms for subject Environment (7785 entries) |
| bee (Any of the membranous-winged insects which compose the superfamily Apoidea in the order Hymenoptera characterized by a hairy body and by sucking and chewing mouthparts) | пчела | |
| bee conservation (The care, preservation and husbandry of hymenopterous insects valued for their ability to pollinate crops and other flora or for their production of honey) | консервация на пчелите | |
| beef cattle (Cattle bred for the production of meat) | кланични говеда | |
| beetle (Any insect of the order Coleoptera, having biting mouthparts and forewings modified to form shell-like protective elytra) | бръмбар | |
| behaviour (Any observable action or response of an organism, group or species to environmental factors) | поведение | |
| behaviour of substances (Reactivity of a compound depending on the structure of the molecules) | поведение (свойства) на веществата | |
| behaviour pattern (A relatively uniform series of overt activities that can be observed with some regularity) | модел на поведение | |
| behavioural science (The study of the behaviour of organisms) | наука за поведението | |
| below-ground biomass | подземна биомаса | |
| beneficial organism | полезен организъм | |
| Bengal fox | бенгалска лисица | |
| Bengal leopard cat | бенгалска котка | |
| benthic division (The bottom of a body of water often occupied by benthos) | бентичен участък | |
| benthic ecosystem | бентична екосистема | |
| benthos | бентос | |
| benzene | бензол | |
| benzopyrene (A five-ring aromatic hydrocarbon found in coal tar, in cigarette smoke, and as a product of incomplete combustion) | бензопирен | |
| Bern Convention | Конвенция за опазване на дивата европейска флора и фауна и природните местообитания | |
| beryllium | берилий | |
| best available techniques | най-добри налични техники |