Water is unusual because it expands as it freezes. Very few substances have this property. The reason liquid water is more dense
then ice can be best explained by? A) water is the universal solvent. B) Water has an unusually high boiling point. C) Water contains elements that are not common in other substances. D) Water is polar and the positive and negative ends of the molecule attract each other.
The correct answer is option D) Water is polar and the positive and negative ends of the molecule attract each other.
The water is a polar molecule, and forms a hydrogen bonding with the other water molecule. In the liquid state, the molecules of the water is in random motion, and the bond between the water molecules are continuously formed and deformed.
In the ice, the hydrogen bond between the water molecules become more stable, due to this, the molecules arrange themselves in a hexagonal pattern. Due to this arrangement, the allover space occupied is expanded. Hence, the ice is expanded than liquid water.
Answer: i would say the independent variable is the soil and the control variable is the seed because it stays the same in all of them to better understand the experiment while the dependent variable is the fertilizer.
Explanation: i am not completely sure but maybe someone else can also answer to verify it first
