Answer:
D, think of chemical changes. When iron rusts it is chemically changed. The other answers are a change in form or a property of iron.
Reaction which breaks down complex molecules into simpler ones n release energy
Answer:
Co²+6H20+light =C6H12O6+O2
Explanation:
This is lysis reactionan so forms glucose and oxgen by water and co2
and in 2nd question plants need N² for growth
