Question

During which of these processes is oxygen consumed?

1. when plants perform photosynthesis
2.when aerobic bacteria break down dead algae in a pond
3.when plants or animals perform aerobic cellular respiration
4.when forests are burned to clear land for farming
MULTIPLE CHOICE ANSWER HURRY

Answer 1

1 . when plants perform photosynthesis

Answer 2

HII HERE IS YOUR ANSWER...!!!!:)

I think answer will be 2.