PLEASE HELP ME ASAP GIVING AWAY 10 POINTS!!!

What happens when a magniseum ion ia atracked to a chlrene ion

The two tubes contain bromothymol blue. after 24 hours, what will the color of the water be in tube b? a. green (it won't change) b. yellow c. blue d. colorless (clear)

18. over time, how do sand dunes tend to migrate? a. perpendicular to the movement of the wind b. in the same direction as the wind blows c. toward the wind d. in random directions