Sids can be caused by
a. smoking during pregnancy.
Answer:
D
Explanation:
Im not 100% sure so i would go back and check it again
Answer:
Rusting is an oxidation reaction. The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust. Iron and steel rust when they come into contact with water and oxygen – both are needed for rusting to occur.
