Answer:
B. Oxygen
Explanation:
C.
The process of photosynthesis converts those things into the sugar glucose, which it uses to sustain itself. A biproduct of this process is oxygen, but the carbon is used to make sugar. Hope this helps and brainliest is always appreciated!
272 m/s
The boy jogs= 250 m
time he takes 110 seconds
average speed = 250/110