biological macromolecules
biological markers
biological materials
biological matrices
biological measurement
biological measures
biological mechanisms
biological mechanisms underlying
biological media
biological membranes

biological methods
biological mixtures
biological model
biological models
biological molecules
biological monitoring
biological mothers
biological nature
biological networks
biological nitrogen fixation
biological nutrient removal

biological organization
biological origin
biological outcomes
biological oxygen demand
biological pacemaker
biological parameters
biological parents
biological particles
biological pathways
biological performance
biological phenomena

biological phenomenon
biological phenotype
biological phosphorus removal
biological plausibility
biological population
biological potential
biological principles
biological probes
biological problems
biological processes
biological production

biological productivity
biological products
biological profile
biological properties
biological quality