Answer:calcium
Explanation: calcium is an alkaline earth metal,group 2 period 4
The answer to the question would be the skin.
I believe this is the a^2+b^2=c^2. Sorry if you don't understand me language I speak German. But uh, its based on PT i think. hope it help!
Answer:
By strengthening the weak coral that is on the reef.
Answer:
J
Explanation:
Chlorine Gas is Cl2 so if it isnt on the left as that its wrong.
Then on the products see that Fe III means Fe is +3 charge so we have to have 3 Cl to balance it to 0 since each cl as -1 charge.
FInally check if the equation is balanced J is maybe H but its to blurry to tell