Biotic

6 clues
Life-related
Of living things
Relating to life
Pertaining to life
Ecosystem adjective
Of living organisms
Similar answers:
Aarctic
Abiotic
Abrightparticularstar
Accrabatic
Acertainjustice
Acetic
Aceticacid
Achromatic
Achromaticcolor
Acoustic
Acoustical
Acousticcoupler
Acousticguitar
Acoustician
Acoustics
Acquiretickettoride
Acriticofourownwork
Acroamatical
Acrobatic
Acrobatics