Answer:
Plant A
Explanation:
This is because Plant A is what you will compare to the other plants. Because it has no fertilizer is is the independent variable.
Answer:
The change that took place is a chemical change as a chemical reaction occurs.
Vinegar = 
Baking soda = 
Reaction:

Developmental delays is when your child dose not reach there developmental milestones at the expected times...It is important to respond promptly so that the child can get the help they need to help them get back on the right track