Answer:
The height of A is 900
Explanation: Beside A, there is a number which explains what the height is so the answer is A.
An ion must be charged either positively or negatively
A is incorrect - HCI is a formula that represents Hydrochloric Acid
B is incorrect - H20 is a formula that represents Water
C is correct - H3O+1 is a formula that represents Hydronium Ion; the ion is also positively charged
The answer is C.
The wave length of light. This determinds the color/type of light.
Glucose + Oxygen--> Water + Carbon dioxide + ATP/energy
C6H12O6 + O2--> Water + CO2 + ENERGY
I hope this helps