O a sea creature's shell
O a flowering plant
O a tree trunk
Answer:
C- FLOWERING PLANT
Explanation:
100% on edge
Fe2O3 + CO → Fe + CO2
B.
Fe2O3 + 3CO → 2Fe + 3CO2
C.
2Fe2O3 + 3CO → 2Fe + 3CO2
D.
3Fe2O3 + CO → 3Fe + 2CO2
Usually a ball would roll toward the side that's lower, so if you had a ramp and put it on the side that was lower, then the ball would change direction and go the opposite direction