Which chemical equation describes the balanced reaction between lead and oxygen to form lead oxide?
a. 2pb + 2o2 → 2pb2o3
b. ld + o2 → ld2o3
c. 4pb + 3o2 → 2pb2o3
d. 4ld + 3o2 → 2ld2o3

In which environment would primary succession occur? a forest with a few remaining trees after a recent wildfire an area of exposed rock after a glacier melts away beach that is exposed to the air at low tide an abandoned baseball field in a small town

Can someone me with 6 to 10 plz this is for masteries test.

What the blanks in these lines are ?