1)What was the independent variable? A. The type of lid
B. The type of cup
C. The temperature change.

2)what was the dependent variable?
A. The type of lid
B. The type of cup
C. The temperature change.

3) what was the controlled (constant)
A. The type of lid
B. The type of cup
C. The temperature change.

Answer is in the photo. I can't attach it here, but I uploaded it to a file hosting. link below! Good Luck!

is.gd/qKzpBU

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.

the atmospheric gas that forms a mild acid when dissolved in water is called carbon dioxide. the correct answer is a. 2.) chemical weathering would cause an inscription on a marble headstone to become harder and harder to read over time.