Answer :
Answer:
IV: salt solution
DV: Hight of plants
Control: the fourth plant
Explanation:
Answer:
Independent Variable: what it's watered with (regular water or salt water as well as the concentration of salt water)
Dependent Variable: Height
Control: the type of plant (sunflower)
Explanation:
IV: what changes
DV: what's being tested
Control: what stays the same