Answer:.633
Explanation:
I have know idea but it was right
One is ocean
Two is green house effect is the trapping of gas in the atmosphere and global warming is the heating of the earth
Three is option one
Left side metals right side non metals. arrganged in groups (columns) and periods (rows), each group tells you amount of valence electrons
Answer:
I think it would be A but it might be B please tell if wrong
Copper oxide is the only product, and it contains copper and oxygen.
one of the reactants is copper, so the other reactant must be oxygen.
The copper metal must have combined with something in the air.
