Answer: two
Explanation: toasting bread is a chemical change and so is mixing the lemonade powder into water. The rest of the changes are physical.
<span>Water heats up, changes to water vapor and evaporates, rises into the sky. It cools, condenses, turns back into liquid water forming clouds. Then it falls back to earth as precipitation and runs down hills or mountains during runoff and returns to lakes and oceans.
I think i`m not sure :)</span>
Answer:
a.The tablets dissolve in water
Explanation:
I picked this as an answer because if you see the question it looks like it would be vinegar and they drop the tablets and then after the tablet dissolves.
It gives the plant ENOUGH oxygen to help it
