I'll do A for you. They are all double displacement reactions. So recall: AB+CD--> CB+AD . Also, knowing the charges will help and make this so easy.
The fridge part can, just not the freezer, I think.
Answer:
dependent variable: plant growth
independent: sunlight impact/amount of light
Explanation:
The solute normally doesn't dissolve and sinks to the bottom of the container. However, some saturated solutions can become super-saturated for a given temperature and pressure, by altering the conditions without allowing solute to precipitate.
The answer is c
i hope I'm right sorry if I'm wrong
