Paper
Glass
Aluminum
Wooden ruler
Sand
Steak
Pork chops
Salad
Bread
Hair
Cotton fabric
Wool
Cheddar cheese
Can you tell why ? It is urgent ! Are they. Biotic or abiotic
Which ones are or were alive? Those are biotic. The others are abiotic.
Paper was once wood -- so it's biotic.
Glass was sand -- so it's abiotic.
Take it from there.