Question

1 . Breathing in living organisms. a. Lead. 2 . Batteries used in cars and UPS. b . Chlorine. 3 . Preservation of biological samples. c . Carbon. 4 . Pigment in black printing ink. d . Oxygen. 5 . Disinfectant for water e . Nitrogen,. Match it​

Answer 1

Breathing in living organisms.= Oxygen

Batteries used in cars and UPS=carbon(graphite)

Preservation of biological samples=nitrogen(non reactive )

Disinfectant for water =chlorine

Pigment in black printing ink =lead

hope it helps