If it has a metal and a nonmetal. Not sure if this helps, but I hope it does :)
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
2NaBr + Ca(OH)2 ➡️ CaBr2 + 2NaOH
Answer:
Its valancy is 1.
As it has the formula OH-.
It has valancy 1.
<em><u>hope</u></em><em><u> </u></em><em><u>it helps</u></em><em><u>.</u></em><em><u>.</u></em>